Packages

trait IterableOps[+A, +CC[_], +C] extends IterableOnce[A] with IterableOnceOps[A, CC, C]

Base trait for Iterable operations

VarianceNote

We require that for all child classes of Iterable the variance of the child class and the variance of the C parameter passed to IterableOps are the same. We cannot express this since we lack variance polymorphism. That's why we have to resort at some places to write C[A @uncheckedVariance].

CC

type constructor of the collection (e.g. List, Set). Operations returning a collection with a different type of element B (e.g. map) return a CC[B].

C

type of the collection (e.g. List[Int], String, BitSet). Operations returning a collection with the same type of element (e.g. drop, filter) return a C.

Source
Iterable.scala
Linear Supertypes
Known Subclasses
ValueSet, AbstractIndexedSeqView, AbstractIterable, AbstractMap, AbstractMapView, AbstractSeq, AbstractSeqView, AbstractSet, AbstractView, BitSet, BitSetOps, EvidenceIterableFactoryDefaults, IndexedSeq, IndexedSeqOps, IndexedSeqView, Appended, Concat, Drop, DropRight, Id, Map, Prepended, Reverse, Slice, Take, TakeRight, Iterable, IterableFactoryDefaults, LinearSeq, LinearSeqOps, Map, MapFactoryDefaults, MapOps, KeySet, MapView, Filter, FilterKeys, Id, MapValues, TapEach, Seq, SeqMap, SeqOps, SeqView, Appended, Concat, Drop, DropRight, Id, Map, Prepended, Reverse, Sorted, Take, TakeRight, Set, SetOps, SortedMap, SortedMapFactoryDefaults, SortedMapOps, KeySortedSet, SortedSet, SortedSetFactoryDefaults, SortedSetOps, StrictOptimizedIterableOps, StrictOptimizedLinearSeqOps, StrictOptimizedMapOps, StrictOptimizedSeqOps, StrictOptimizedSetOps, StrictOptimizedSortedMapOps, StrictOptimizedSortedSetOps, StringView, View, Appended, Collect, Concat, DistinctBy, Drop, DropRight, DropWhile, Elems, Empty, Fill, Filter, FlatMap, Iterate, LeftPartitionMapped, Map, PadTo, Prepended, RightPartitionMapped, ScanLeft, Single, Tabulate, Take, TakeRight, TakeWhile, Unfold, Updated, Zip, ZipAll, ZipWithIndex, Map, TrieMap, ::, AbstractMap, AbstractSeq, AbstractSet, ArraySeq, ofBoolean, ofByte, ofChar, ofDouble, ofFloat, ofInt, ofLong, ofRef, ofShort, ofUnit, BitSet, HashMap, HashSet, IndexedSeq, IndexedSeqOps, IntMap, Iterable, LazyList, LinearSeq, LinearSeqOps, List, ListMap, ListSet, Node, LongMap, Map, Map1, Map2, Map3, Map4, WithDefault, MapOps, ImmutableKeySet, Nil, NumericRange, Exclusive, Inclusive, Queue, Range, Exclusive, Inclusive, Seq, SeqMap, SeqOps, Set, Set1, Set2, Set3, Set4, SetOps, SortedMap, WithDefault, SortedMapOps, ImmutableKeySortedSet, SortedSet, SortedSetOps, Cons, Empty, StrictOptimizedMapOps, StrictOptimizedSeqOps, StrictOptimizedSetOps, StrictOptimizedSortedMapOps, StrictOptimizedSortedSetOps, TreeMap, TreeSeqMap, TreeSet, Vector, VectorMap, WrappedString, AbstractBuffer, AbstractIterable, AbstractMap, AbstractSeq, AbstractSet, AnyRefMap, ArrayBuffer, ArrayBufferView, ArrayDeque, ArrayDequeOps, ArraySeq, ofBoolean, ofByte, ofChar, ofDouble, ofFloat, ofInt, ofLong, ofRef, ofShort, ofUnit, BitSet, Buffer, CollisionProofHashMap, HashMap, HashSet, IndexedBuffer, IndexedSeq, IndexedSeqOps, Iterable, LinkedHashMap, LinkedKeySet, LinkedHashSet, ListBuffer, LongMap, Map, WithDefault, MapOps, PriorityQueue, Queue, Seq, SeqMap, SeqOps, Set, SetOps, SortedMap, WithDefault, SortedMapOps, SortedSet, SortedSetOps, Stack, StringBuilder, TreeMap, TreeSet, UnrolledBuffer, WeakHashMap, Accumulator, AnyAccumulator, DoubleAccumulator, IntAccumulator, LongAccumulator, SystemProperties, DefaultMap, BitSet1, BitSet2, BitSetN, Stream, ListMap, MultiMap, OpenHashMap
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. IterableOps
  2. IterableOnceOps
  3. IterableOnce
  4. Any
Implicitly
  1. by iterableOnceExtensionMethods
  2. by any2stringadd
  3. by StringFormat
  4. by Ensuring
  5. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def coll: C

    returns

    This collection as a C.

    Attributes
    protected
  2. abstract def fromSpecific(coll: IterableOnce[A]): C

    Defines how to turn a given Iterable[A] into a collection of type C.

    Defines how to turn a given Iterable[A] into a collection of type C.

    This process can be done in a strict way or a non-strict way (ie. without evaluating the elements of the resulting collections). In other words, this methods defines the evaluation model of the collection.

    Attributes
    protected
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as it is called with an Iterable[A] obtained from this collection (as it is the case in the implementations of operations where we use a View[A]), it is safe.

  3. abstract def getClass(): Class[_ <: AnyRef]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

    a class object corresponding to the runtime type of the receiver.

    Definition Classes
    Any
  4. abstract def iterableFactory: IterableFactory[CC]

    The companion object of this iterable collection, providing various factory methods.

    The companion object of this iterable collection, providing various factory methods.

    Note

    When implementing a custom collection type and refining CC to the new type, this method needs to be overridden to return a factory for the new type (the compiler will issue an error otherwise).

  5. abstract def iterator: Iterator[A]

    An scala.collection.Iterator over the elements of this iterable collection.

    An scala.collection.Iterator over the elements of this iterable collection.

    If an IterableOnce object is in fact an scala.collection.Iterator, this method always returns itself, in its current state, but if it is an scala.collection.Iterable, this method always returns a new scala.collection.Iterator.

    Definition Classes
    IterableOnce
  6. abstract def newSpecificBuilder: Builder[A, C]

    returns

    a strict builder for the same collection type. Note that in the case of lazy collections (e.g. scala.collection.View or scala.collection.immutable.LazyList), it is possible to implement this method but the resulting Builder will break laziness. As a consequence, operations should preferably be implemented with fromSpecific instead of this method.

    Attributes
    protected
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as the returned builder is only fed with A values taken from this instance, it is safe.

  7. abstract def toIterable: Iterable[A]

    returns

    This collection as an Iterable[A]. No new collection will be built if this is already an Iterable[A].

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.7) toIterable is internal and will be made protected; its name is similar to toList or toSeq, but it doesn't copy non-immutable collections

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    Any
  2. final def ##: Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toany2stringadd[IterableOps[A, CC, C]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. final def ++[B >: A](suffix: IterableOnce[B]): CC[B]

    Alias for concat

    Alias for concat

    Annotations
    @inline()
  5. def ->[B](y: B): (IterableOps[A, CC, C], B)
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toArrowAssoc[IterableOps[A, CC, C]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  6. final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Any
  7. final def addString(b: mutable.StringBuilder): b.type

    Appends all elements of this iterable collection to a string builder.

    Appends all elements of this iterable collection to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this iterable collection without any separator string.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> val h = a.addString(b)
    h: StringBuilder = 1234
    b

    the string builder to which elements are appended.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  8. final def addString(b: mutable.StringBuilder, sep: String): b.type

    Appends all elements of this iterable collection to a string builder using a separator string.

    Appends all elements of this iterable collection to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method toString) of all elements of this iterable collection, separated by the string sep.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b, ", ")
    res0: StringBuilder = 1, 2, 3, 4
    b

    the string builder to which elements are appended.

    sep

    the separator string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  9. def addString(b: mutable.StringBuilder, start: String, sep: String, end: String): b.type

    Appends all elements of this iterable collection to a string builder using start, end, and separator strings.

    Appends all elements of this iterable collection to a string builder using start, end, and separator strings. The written text begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this iterable collection are separated by the string sep.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b , "List(" , ", " , ")")
    res5: StringBuilder = List(1, 2, 3, 4)
    b

    the string builder to which elements are appended.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
  10. final def asInstanceOf[T0]: T0

    Forces the compiler to treat the receiver object as having type T0, even though doing so may violate type safety.

    Forces the compiler to treat the receiver object as having type T0, even though doing so may violate type safety.

    This method is useful when you believe you have type information the compiler doesn't, and it also isn't possible to check the type at runtime. In such situations, skipping type safety is the only option.

    It is platform dependent whether asInstanceOf has any effect at runtime. It might do a runtime type test on the erasure of T0, insert a conversion (such as boxing/unboxing), fill in a default value, or do nothing at all.

    In particular, asInstanceOf is not a type test. It does **not** mean:

    this match {
     case x: T0 => x
     case _     => throw ClassCastException("...")

    Use pattern matching or isInstanceOf for type testing instead.

    Situations where asInstanceOf is useful:

    • when flow analysis fails to deduce T0 automatically
    • when down-casting a type parameter or an abstract type member (which cannot be checked at runtime due to type erasure) If there is any doubt and you are able to type test instead, you should do so.

    Be careful of using asInstanceOf when T0 is a primitive type. When T0 is primitive, asInstanceOf may insert a conversion instead of a type test. If your intent is to convert, use a toT method (x.toChar, x.toByte, etc.).

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown

    ClassCastException if the receiver is not an instance of the erasure of T0, if that can be checked on this platform

  11. def collect[B](pf: PartialFunction[A, B]): CC[B]

    Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.

    Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.

    B

    the element type of the returned iterable collection.

    pf

    the partial function which filters and maps the iterable collection.

    returns

    a new iterable collection resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  12. def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

    Finds the first element of the iterable collection for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the iterable collection for which the given partial function is defined, and applies the partial function to it.

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    pf

    the partial function

    returns

    an option value containing pf applied to the first value for which it is defined, or None if none exists.

    Definition Classes
    IterableOnceOps
    Example:
    1. Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)

  13. def concat[B >: A](suffix: IterableOnce[B]): CC[B]

    Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand.

    Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the iterable collection is the most specific superclass encompassing the element types of the two operands.

    B

    the element type of the returned collection.

    suffix

    the iterable to append.

    returns

    a new iterable collection which contains all elements of this iterable collection followed by all elements of suffix.

  14. def copyToArray[B >: A](xs: Array[B], start: Int, len: Int): Int

    Copy elements to an array, returning the number of elements written.

    Copy elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with at most len elements of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached, or len elements have been copied.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index of xs.

    len

    the maximal number of elements to copy.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  15. def copyToArray[B >: A](xs: Array[B], start: Int): Int

    Copies elements to an array, returning the number of elements written.

    Copies elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with values of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index of xs.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  16. def copyToArray[B >: A](xs: Array[B]): Int

    Copies elements to an array, returning the number of elements written.

    Copies elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with values of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  17. def corresponds[B](that: IterableOnce[B])(p: (A, B) => Boolean): Boolean

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Note: will not terminate for infinite-sized collections.

    B

    the type of the elements of that

    that

    the other collection

    p

    the test predicate, which relates elements from both collections

    returns

    true if both collections have the same length and p(x, y) is true for all corresponding elements x of this iterator and y of that, otherwise false

    Definition Classes
    IterableOnceOps
  18. def count(p: (A) => Boolean): Int

    Counts the number of elements in the iterable collection which satisfy a predicate.

    Counts the number of elements in the iterable collection which satisfy a predicate.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    IterableOnceOps
  19. def drop(n: Int): C

    Selects all elements except the first n ones.

    Selects all elements except the first n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this iterable collection.

    returns

    a iterable collection consisting of all elements of this iterable collection except the first n ones, or else the empty iterable collection, if this iterable collection has less than n elements. If n is negative, don't drop any elements.

    Definition Classes
    IterableOpsIterableOnceOps
  20. def dropRight(n: Int): C

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this iterable collection.

    returns

    a iterable collection consisting of all elements of this iterable collection except the last n ones, or else the empty iterable collection, if this iterable collection has less than n elements. If n is negative, don't drop any elements.

  21. def dropWhile(p: (A) => Boolean): C

    Selects all elements except the longest prefix that satisfies a predicate.

    Selects all elements except the longest prefix that satisfies a predicate.

    The matching prefix starts with the first element of this iterable collection, and the element following the prefix is the first element that does not satisfy the predicate. The matching prefix may be empty, so that this method returns the entire iterable collection.

    Example:

    scala> List(1, 2, 3, 100, 4).dropWhile(n => n < 10)
    val res0: List[Int] = List(100, 4)
    
    scala> List(1, 2, 3, 100, 4).dropWhile(n => n == 0)
    val res1: List[Int] = List(1, 2, 3, 100, 4)

    Use span to obtain both the prefix and suffix. Use filterNot to drop all elements that satisfy the predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest suffix of this iterable collection whose first element does not satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  22. def empty: C

    The empty iterable of the same type as this iterable.

    The empty iterable of the same type as this iterable.

    returns

    an empty iterable of type C.

  23. def ensuring(cond: (IterableOps[A, CC, C]) => Boolean, msg: => Any): IterableOps[A, CC, C]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toEnsuring[IterableOps[A, CC, C]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  24. def ensuring(cond: (IterableOps[A, CC, C]) => Boolean): IterableOps[A, CC, C]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toEnsuring[IterableOps[A, CC, C]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  25. def ensuring(cond: Boolean, msg: => Any): IterableOps[A, CC, C]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toEnsuring[IterableOps[A, CC, C]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  26. def ensuring(cond: Boolean): IterableOps[A, CC, C]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toEnsuring[IterableOps[A, CC, C]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  27. def equals(arg0: Any): Boolean

    Compares the receiver object (this) with the argument object (that) for equivalence.

    Compares the receiver object (this) with the argument object (that) for equivalence.

    Any implementation of this method should be an equivalence relation:

    • It is reflexive: for any instance x of type Any, x.equals(x) should return true.
    • It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true.
    • It is transitive: for any instances x, y, and z of type Any if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is usually necessary to override hashCode to ensure that objects which are "equal" (o1.equals(o2) returns true) hash to the same scala.Int. (o1.hashCode.equals(o2.hashCode)).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Any
  28. def exists(p: (A) => Boolean): Boolean

    Tests whether a predicate holds for at least one element of this iterable collection.

    Tests whether a predicate holds for at least one element of this iterable collection.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p is satisfied by at least one element of this iterable collection, otherwise false

    Definition Classes
    IterableOnceOps
  29. def filter(pred: (A) => Boolean): C

    Selects all elements of this iterable collection which satisfy a predicate.

    Selects all elements of this iterable collection which satisfy a predicate.

    returns

    a new iterable collection consisting of all elements of this iterable collection that satisfy the given predicate p. The order of the elements is preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  30. def filterNot(pred: (A) => Boolean): C

    Selects all elements of this iterable collection which do not satisfy a predicate.

    Selects all elements of this iterable collection which do not satisfy a predicate.

    pred

    the predicate used to test elements.

    returns

    a new iterable collection consisting of all elements of this iterable collection that do not satisfy the given predicate pred. Their order may not be preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  31. def find(p: (A) => Boolean): Option[A]

    Finds the first element of the iterable collection satisfying a predicate, if any.

    Finds the first element of the iterable collection satisfying a predicate, if any.

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

    an option value containing the first element in the iterable collection that satisfies p, or None if none exists.

    Definition Classes
    IterableOnceOps
  32. def flatMap[B](f: (A) => IterableOnce[B]): CC[B]

    Builds a new iterable collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

    Builds a new iterable collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

    For example:

    def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

    The type of the resulting collection is guided by the static type of iterable collection. This might cause unexpected results sometimes. For example:

    // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
    def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)
    
    // lettersOf will return a Set[Char], not a Seq
    def lettersOf(words: Seq[String]) = words.toSet flatMap ((word: String) => word.toSeq)
    
    // xs will be an Iterable[Int]
    val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)
    
    // ys will be a Map[Int, Int]
    val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)
    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new iterable collection resulting from applying the given collection-valued function f to each element of this iterable collection and concatenating the results.

    Definition Classes
    IterableOpsIterableOnceOps
  33. def flatten[B](implicit asIterable: (A) => IterableOnce[B]): CC[B]

    Converts this iterable collection of iterable collections into a iterable collection formed by the elements of these iterable collections.

    Converts this iterable collection of iterable collections into a iterable collection formed by the elements of these iterable collections.

    The resulting collection's type will be guided by the type of iterable collection. For example:

    val xs = List(
               Set(1, 2, 3),
               Set(1, 2, 3)
             ).flatten
    // xs == List(1, 2, 3, 1, 2, 3)
    
    val ys = Set(
               List(1, 2, 3),
               List(3, 2, 1)
             ).flatten
    // ys == Set(1, 2, 3)
    B

    the type of the elements of each iterable collection.

    asIterable

    an implicit conversion which asserts that the element type of this iterable collection is an Iterable.

    returns

    a new iterable collection resulting from concatenating all element iterable collections.

    Definition Classes
    IterableOpsIterableOnceOps
  34. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1

    Applies the given binary operator op to the given initial value z and all elements of this iterable collection.

    Applies the given binary operator op to the given initial value z and all elements of this iterable collection.

    For each application of the operator, each operand is either an element of this iterable collection, the initial value, or another such application of the operator.

    The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation. The initial value may be used an arbitrary number of times, but at least once.

    If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative. In either case, it is also necessary that the initial value be a neutral value for the operator, e.g. Nil for List concatenation or 1 for multiplication.

    The default implementation in IterableOnce is equivalent to foldLeft but may be overridden for more efficient traversal orders.

    Note: will not terminate for infinite-sized collections.

    A1

    The type parameter for the binary operator, a supertype of A.

    z

    An initial value; may be used an arbitrary number of times in the computation of the result; must be a neutral value for op for the result to always be the same across runs.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of applying op between all the elements and z, or z if this iterable collection is empty.

    Definition Classes
    IterableOnceOps
  35. def foldLeft[B](z: B)(op: (B, A) => B): B

    Applies the given binary operator op to the given initial value z and all elements of this iterable collection, going left to right.

    Applies the given binary operator op to the given initial value z and all elements of this iterable collection, going left to right. Returns the initial value if this iterable collection is empty.

    "Going left to right" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this iterable collection, the result is op( op( ... op( op(z, x1), x2) ... ), xn).

    If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the initial value, and each other left operand is itself an application of the operator. The elements of this iterable collection and the initial value all appear exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

    The result of applying op to z and all elements of this iterable collection, going left to right. Returns z if this iterable collection is empty.

    Definition Classes
    IterableOnceOps
  36. def foldRight[B](z: B)(op: (A, B) => B): B

    Applies the given binary operator op to all elements of this iterable collection and the given initial value z, going right to left.

    Applies the given binary operator op to all elements of this iterable collection and the given initial value z, going right to left. Returns the initial value if this iterable collection is empty.

    "Going right to left" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this iterable collection, the result is op(x1, op(x2, op( ... op(xn, z) ... ))).

    If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the initial value, and each other right operand is itself an application of the operator. The elements of this iterable collection and the initial value all appear exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this iterable collection and z, going right to left. Returns z if this iterable collection is empty.

    Definition Classes
    IterableOnceOps
  37. def forall(p: (A) => Boolean): Boolean

    Tests whether a predicate holds for all elements of this iterable collection.

    Tests whether a predicate holds for all elements of this iterable collection.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    true if this iterable collection is empty or the given predicate p holds for all elements of this iterable collection, otherwise false.

    Definition Classes
    IterableOnceOps
  38. def foreach[U](f: (A) => U): Unit

    Applies f to each element for its side effects.

    Applies f to each element for its side effects. Note: U parameter needed to help scalac's type inference.

    Definition Classes
    IterableOnceOps
  39. def groupBy[K](f: (A) => K): immutable.Map[K, C]

    Partitions this iterable collection into a map of iterable collections according to some discriminator function.

    Partitions this iterable collection into a map of iterable collections according to some discriminator function.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to iterable collections such that the following invariant holds:

    (xs groupBy f)(k) = xs filter (x => f(x) == k)

    That is, every key k is bound to a iterable collection of those elements x for which f(x) equals k.

  40. def groupMap[K, B](key: (A) => K)(f: (A) => B): immutable.Map[K, CC[B]]

    Partitions this iterable collection into a map of iterable collections according to a discriminator function key.

    Partitions this iterable collection into a map of iterable collections according to a discriminator function key. Each element in a group is transformed into a value of type B using the value function.

    It is equivalent to groupBy(key).mapValues(_.map(f)), but more efficient.

    case class User(name: String, age: Int)
    
    def namesByAge(users: Seq[User]): Map[Int, Seq[String]] =
      users.groupMap(_.age)(_.name)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

    the type of keys returned by the discriminator function

    B

    the type of values returned by the transformation function

    key

    the discriminator function

    f

    the element transformation function

  41. def groupMapReduce[K, B](key: (A) => K)(f: (A) => B)(reduce: (B, B) => B): immutable.Map[K, B]

    Partitions this iterable collection into a map according to a discriminator function key.

    Partitions this iterable collection into a map according to a discriminator function key. All the values that have the same discriminator are then transformed by the f function and then reduced into a single value with the reduce function.

    It is equivalent to groupBy(key).mapValues(_.map(f).reduce(reduce)), but more efficient.

    def occurrences[A](as: Seq[A]): Map[A, Int] =
      as.groupMapReduce(identity)(_ => 1)(_ + _)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

  42. def grouped(size: Int): Iterator[C]

    Partitions elements in fixed size iterable collections.

    Partitions elements in fixed size iterable collections.

    size

    the number of elements per group

    returns

    An iterator producing iterable collections of size size, except the last will be less than size size if the elements don't divide evenly.

    See also

    scala.collection.Iterator, method grouped

  43. def hashCode(): Int

    Calculate a hash code value for the object.

    Calculate a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    returns

    the hash code value for this object.

    Definition Classes
    Any
  44. def head: A

    Selects the first element of this iterable collection.

    Selects the first element of this iterable collection.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this iterable collection.

    Exceptions thrown

    NoSuchElementException if the iterable collection is empty.

  45. def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this iterable collection if it is nonempty, None if it is empty.

  46. def init: C

    The initial part of the collection without its last element.

    The initial part of the collection without its last element.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

  47. def inits: Iterator[C]

    Iterates over the inits of this iterable collection.

    Iterates over the inits of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, with the intervening values the results of successive applications of init.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    returns

    an iterator over all the inits of this iterable collection

    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  48. def isEmpty: Boolean

    Tests whether the iterable collection is empty.

    Tests whether the iterable collection is empty.

    Note: The default implementation creates and discards an iterator.

    Note: Implementations in subclasses that are not repeatedly iterable must take care not to consume any elements when isEmpty is called.

    returns

    true if the iterable collection contains no elements, false otherwise.

    Definition Classes
    IterableOnceOps
  49. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Depending on what T0 is, the test is done in one of the below ways:

    • T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
    • T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
    • T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
    • T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
    • T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
    • T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.

    This is exactly equivalent to the type pattern _: T0

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
    Note

    due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.

  50. def isTraversableAgain: Boolean

    Tests whether this iterable collection can be repeatedly traversed.

    Tests whether this iterable collection can be repeatedly traversed. Always true for Iterables and false for Iterators unless overridden.

    returns

    true if it is repeatedly traversable, false otherwise.

    Definition Classes
    IterableOpsIterableOnceOps
  51. def knownSize: Int

    The number of elements in this iterable collection, if it can be cheaply computed, -1 otherwise.

    The number of elements in this iterable collection, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.

    Definition Classes
    IterableOnce
  52. def last: A

    Selects the last element.

    Selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    The last element of this iterable collection.

    Exceptions thrown

    NoSuchElementException If the iterable collection is empty.

  53. def lastOption: Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the last element of this iterable collection$ if it is nonempty, None if it is empty.

  54. def map[B](f: (A) => B): CC[B]

    Builds a new iterable collection by applying a function to all elements of this iterable collection.

    Builds a new iterable collection by applying a function to all elements of this iterable collection.

    B

    the element type of the returned iterable collection.

    f

    the function to apply to each element.

    returns

    a new iterable collection resulting from applying the given function f to each element of this iterable collection and collecting the results.

    Definition Classes
    IterableOpsIterableOnceOps
  55. def max[B >: A](implicit ord: math.Ordering[B]): A

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the largest element of this iterable collection with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  56. def maxBy[B](f: (A) => B)(implicit ord: math.Ordering[B]): A

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this iterable collection with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  57. def maxByOption[B](f: (A) => B)(implicit ord: math.Ordering[B]): Option[A]

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    an option value containing the first element of this iterable collection with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  58. def maxOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    an option value containing the largest element of this iterable collection with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  59. def min[B >: A](implicit ord: math.Ordering[B]): A

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the smallest element of this iterable collection with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  60. def minBy[B](f: (A) => B)(implicit ord: math.Ordering[B]): A

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this iterable collection with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  61. def minByOption[B](f: (A) => B)(implicit ord: math.Ordering[B]): Option[A]

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    an option value containing the first element of this iterable collection with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  62. def minOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    an option value containing the smallest element of this iterable collection with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  63. final def mkString: String

    Displays all elements of this iterable collection in a string.

    Displays all elements of this iterable collection in a string.

    Delegates to addString, which can be overridden.

    returns

    a string representation of this iterable collection. In the resulting string the string representations (w.r.t. the method toString) of all elements of this iterable collection follow each other without any separator string.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  64. final def mkString(sep: String): String

    Displays all elements of this iterable collection in a string using a separator string.

    Displays all elements of this iterable collection in a string using a separator string.

    Delegates to addString, which can be overridden.

    sep

    the separator string.

    returns

    a string representation of this iterable collection. In the resulting string the string representations (w.r.t. the method toString) of all elements of this iterable collection are separated by the string sep.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  65. final def mkString(start: String, sep: String, end: String): String

    Displays all elements of this iterable collection in a string using start, end, and separator strings.

    Displays all elements of this iterable collection in a string using start, end, and separator strings.

    Delegates to addString, which can be overridden.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    a string representation of this iterable collection. The resulting string begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this iterable collection are separated by the string sep.

    Definition Classes
    IterableOnceOps
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  66. def nonEmpty: Boolean

    Tests whether the iterable collection is not empty.

    Tests whether the iterable collection is not empty.

    returns

    true if the iterable collection contains at least one element, false otherwise.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
  67. def partition(p: (A) => Boolean): (C, C)

    A pair of, first, all elements that satisfy predicate p and, second, all elements that do not.

    A pair of, first, all elements that satisfy predicate p and, second, all elements that do not.

    The two iterable collection correspond to the result of filter and filterNot, respectively.

    The default implementation provided here needs to traverse the collection twice. Strict collections have an overridden version of partition in StrictOptimizedIterableOps, which requires only a single traversal.

  68. def partitionMap[A1, A2](f: (A) => Either[A1, A2]): (CC[A1], CC[A2])

    Applies a function f to each element of the iterable collection and returns a pair of iterable collections: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Applies a function f to each element of the iterable collection and returns a pair of iterable collections: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Example:

    val xs = Iterable(1, "one", 2, "two", 3, "three") partitionMap {
     case i: Int => Left(i)
     case s: String => Right(s)
    }
    // xs == (Iterable(1, 2, 3),
    //        Iterable(one, two, three))
    A1

    the element type of the first resulting collection

    A2

    the element type of the second resulting collection

    f

    the 'split function' mapping the elements of this iterable collection to an scala.util.Either

    returns

    a pair of iterable collections: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

  69. def product[B >: A](implicit num: math.Numeric[B]): B

    Multiplies together the elements of this collection.

    Multiplies together the elements of this collection.

    The default implementation uses reduce for a known non-empty collection, foldLeft otherwise.

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the * operator.

    num

    an implicit parameter defining a set of numeric operations which includes the * operator to be used in forming the product.

    returns

    the product of all elements of this iterable collection with respect to the * operator in num.

    Definition Classes
    IterableOnceOps
  70. def reduce[B >: A](op: (B, B) => B): B

    Applies the given binary operator op to all elements of this iterable collection.

    Applies the given binary operator op to all elements of this iterable collection.

    For each application of the operator, each operand is either an element of this iterable collection or another such application of the operator. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

    If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The type parameter for the binary operator, a supertype of A.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of applying op between all the elements if the iterable collection is nonempty.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  71. def reduceLeft[B >: A](op: (B, A) => B): B

    Applies the given binary operator op to all elements of this iterable collection, going left to right.

    Applies the given binary operator op to all elements of this iterable collection, going left to right.

    "Going left to right" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this iterable collection, the result is op( op( op( ... op(x1, x2) ... ), xn-1), xn).

    If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the first element of this iterable collection and each other left operand is itself an application of the operator. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this iterable collection, going left to right.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  72. def reduceLeftOption[B >: A](op: (B, A) => B): Option[B]

    If this iterable collection is nonempty, reduces it with the given binary operator op, going left to right.

    If this iterable collection is nonempty, reduces it with the given binary operator op, going left to right.

    The behavior is the same as reduceLeft except that the value is None if the iterable collection is empty. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of reducing this iterable collection with op going left to right if the iterable collection is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  73. def reduceOption[B >: A](op: (B, B) => B): Option[B]

    If this iterable collection is nonempty, reduces it with the given binary operator op.

    If this iterable collection is nonempty, reduces it with the given binary operator op.

    The behavior is the same as reduce except that the value is None if the iterable collection is empty. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of reducing this iterable collection with op if the iterable collection is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  74. def reduceRight[B >: A](op: (A, B) => B): B

    Applies the given binary operator op to all elements of this iterable collection, going right to left.

    Applies the given binary operator op to all elements of this iterable collection, going right to left.

    "Going right to left" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this iterable collection, the result is op(x1, op(x2, op( ... op(xn-1, xn) ... ))).

    If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the last element of this iterable collection and each other right operand is itself an application of the operator. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this iterable collection, going right to left.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this iterable collection is empty.

  75. def reduceRightOption[B >: A](op: (A, B) => B): Option[B]

    If this iterable collection is nonempty, reduces it with the given binary operator op, going right to left.

    If this iterable collection is nonempty, reduces it with the given binary operator op, going right to left.

    The behavior is the same as reduceRight except that the value is None if the iterable collection is empty. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of reducing this iterable collection with op going right to left if the iterable collection is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  76. def reversed: Iterable[A]
    Attributes
    protected
    Definition Classes
    IterableOnceOps
  77. def scan[B >: A](z: B)(op: (B, B) => B): CC[B]

    Computes a prefix scan of the elements of the collection.

    Computes a prefix scan of the elements of the collection.

    Note: The neutral element z may be applied more than once.

    B

    element type of the resulting collection

    z

    neutral element for the operator op

    op

    the associative operator for the scan

    returns

    a new iterable collection containing the prefix scan of the elements in this iterable collection

  78. def scanLeft[B](z: B)(op: (B, A) => B): CC[B]

    Produces a iterable collection containing cumulative results of applying the operator going left to right, including the initial value.

    Produces a iterable collection containing cumulative results of applying the operator going left to right, including the initial value.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    collection with intermediate results

    Definition Classes
    IterableOpsIterableOnceOps
  79. def scanRight[B](z: B)(op: (A, B) => B): CC[B]

    Produces a collection containing cumulative results of applying the operator going right to left.

    Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Example:

    List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)
    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    collection with intermediate results

  80. def size: Int

    The size of this iterable collection.

    The size of this iterable collection.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this iterable collection.

    Definition Classes
    IterableOnceOps
  81. def sizeCompare(that: Iterable[_]): Int

    Compares the size of this iterable collection to the size of another Iterable.

    Compares the size of this iterable collection to the size of another Iterable.

    that

    the Iterable whose size is compared with this iterable collection's size.

    returns

    A value x where

    x <  0       if this.size <  that.size
    x == 0       if this.size == that.size
    x >  0       if this.size >  that.size

    The method as implemented here does not call size directly; its running time is O(this.size min that.size) instead of O(this.size + that.size). The method should be overridden if computing size is cheap and knownSize returns -1.

  82. def sizeCompare(otherSize: Int): Int

    Compares the size of this iterable collection to a test value.

    Compares the size of this iterable collection to a test value.

    otherSize

    the test value that gets compared with the size.

    returns

    A value x where

    x <  0       if this.size <  otherSize
    x == 0       if this.size == otherSize
    x >  0       if this.size >  otherSize

    The method as implemented here does not call size directly; its running time is O(size min otherSize) instead of O(size). The method should be overridden if computing size is cheap and knownSize returns -1.

    See also

    sizeIs

  83. final def sizeIs: SizeCompareOps

    Returns a value class containing operations for comparing the size of this iterable collection to a test value.

    Returns a value class containing operations for comparing the size of this iterable collection to a test value.

    These operations are implemented in terms of sizeCompare(Int), and allow the following more readable usages:

    this.sizeIs < size     // this.sizeCompare(size) < 0
    this.sizeIs <= size    // this.sizeCompare(size) <= 0
    this.sizeIs == size    // this.sizeCompare(size) == 0
    this.sizeIs != size    // this.sizeCompare(size) != 0
    this.sizeIs >= size    // this.sizeCompare(size) >= 0
    this.sizeIs > size     // this.sizeCompare(size) > 0
    Annotations
    @inline()
  84. def slice(from: Int, until: Int): C

    Selects an interval of elements.

    Selects an interval of elements. The returned iterable collection is made up of all elements x which satisfy the invariant:

    from <= indexOf(x) < until

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    from

    the lowest index to include from this iterable collection.

    until

    the lowest index to EXCLUDE from this iterable collection.

    returns

    a iterable collection containing the elements greater than or equal to index from extending up to (but not including) index until of this iterable collection.

    Definition Classes
    IterableOpsIterableOnceOps
  85. def sliding(size: Int, step: Int): Iterator[C]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    The returned iterator will be empty when called on an empty collection. The last element the iterator produces may be smaller than the window size when the original collection isn't exhausted by the window before it and its last element isn't skipped by the step before it.

    size

    the number of elements per group

    step

    the distance between the first elements of successive groups

    returns

    An iterator producing iterable collections of size size, except the last element (which may be the only element) will be smaller if there are fewer than size elements remaining to be grouped.

    Examples:
    1. List(1, 2, 3, 4, 5).sliding(2, 2) = Iterator(List(1, 2), List(3, 4), List(5))

    2. ,
    3. List(1, 2, 3, 4, 5, 6).sliding(2, 3) = Iterator(List(1, 2), List(4, 5))

    See also

    scala.collection.Iterator, method sliding

  86. def sliding(size: Int): Iterator[C]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    An empty collection returns an empty iterator, and a non-empty collection containing fewer elements than the window size returns an iterator that will produce the original collection as its only element.

    size

    the number of elements per group

    returns

    An iterator producing iterable collections of size size, except for a non-empty collection with less than size elements, which returns an iterator that produces the source collection itself as its only element.

    Examples:
    1. List().sliding(2) = empty iterator

    2. ,
    3. List(1).sliding(2) = Iterator(List(1))

    4. ,
    5. List(1, 2).sliding(2) = Iterator(List(1, 2))

    6. ,
    7. List(1, 2, 3).sliding(2) = Iterator(List(1, 2), List(2, 3))

    See also

    scala.collection.Iterator, method sliding

  87. def span(p: (A) => Boolean): (C, C)

    Splits this iterable collection into a prefix/suffix pair according to a predicate.

    Splits this iterable collection into a prefix/suffix pair according to a predicate.

    Note: c span p is equivalent to (but possibly more efficient than) (c takeWhile p, c dropWhile p), provided the evaluation of the predicate p does not cause any side-effects.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the test predicate

    returns

    a pair consisting of the longest prefix of this iterable collection whose elements all satisfy p, and the rest of this iterable collection.

    Definition Classes
    IterableOpsIterableOnceOps
  88. def splitAt(n: Int): (C, C)

    Splits this iterable collection into a prefix/suffix pair at a given position.

    Splits this iterable collection into a prefix/suffix pair at a given position.

    Note: c splitAt n is equivalent to (but possibly more efficient than) (c take n, c drop n).

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the position at which to split.

    returns

    a pair of iterable collections consisting of the first n elements of this iterable collection, and the other elements.

    Definition Classes
    IterableOpsIterableOnceOps
  89. def stepper[S <: Stepper[_]](implicit shape: StepperShape[A, S]): S

    Returns a scala.collection.Stepper for the elements of this collection.

    Returns a scala.collection.Stepper for the elements of this collection.

    The Stepper enables creating a Java stream to operate on the collection, see scala.jdk.StreamConverters. For collections holding primitive values, the Stepper can be used as an iterator which doesn't box the elements.

    The implicit scala.collection.StepperShape parameter defines the resulting Stepper type according to the element type of this collection.

    Note that this method is overridden in subclasses and the return type is refined to S with EfficientSplit, for example scala.collection.IndexedSeqOps.stepper. For Steppers marked with scala.collection.Stepper.EfficientSplit, the converters in scala.jdk.StreamConverters allow creating parallel streams, whereas bare Steppers can be converted only to sequential streams.

    Definition Classes
    IterableOnce
  90. def sum[B >: A](implicit num: math.Numeric[B]): B

    Sums the elements of this collection.

    Sums the elements of this collection.

    The default implementation uses reduce for a known non-empty collection, foldLeft otherwise.

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the + operator.

    num

    an implicit parameter defining a set of numeric operations which includes the + operator to be used in forming the sum.

    returns

    the sum of all elements of this iterable collection with respect to the + operator in num.

    Definition Classes
    IterableOnceOps
  91. def tail: C

    The rest of the collection without its first element.

  92. def tails: Iterator[C]

    Iterates over the tails of this iterable collection.

    Iterates over the tails of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, with the intervening values the results of successive applications of tail.

    returns

    an iterator over all the tails of this iterable collection

    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  93. def take(n: Int): C

    Selects the first n elements.

    Selects the first n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take from this iterable collection.

    returns

    a iterable collection consisting only of the first n elements of this iterable collection, or else the whole iterable collection, if it has less than n elements. If n is negative, returns an empty iterable collection.

    Definition Classes
    IterableOpsIterableOnceOps
  94. def takeRight(n: Int): C

    Selects the last n elements.

    Selects the last n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take from this iterable collection.

    returns

    a iterable collection consisting only of the last n elements of this iterable collection, or else the whole iterable collection, if it has less than n elements. If n is negative, returns an empty iterable collection.

  95. def takeWhile(p: (A) => Boolean): C

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest prefix of this iterable collection whose elements all satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  96. def tapEach[U](f: (A) => U): C

    Applies a side-effecting function to each element in this collection.

    Applies a side-effecting function to each element in this collection. Strict collections will apply f to their elements immediately, while lazy collections like Views and LazyLists will only apply f on each element if and when that element is evaluated, and each time that element is evaluated.

    U

    the return type of f

    f

    a function to apply to each element in this iterable collection

    returns

    The same logical collection as this

    Definition Classes
    IterableOpsIterableOnceOps
  97. def to[C1](factory: Factory[A, C1]): C1

    Given a collection factory factory, converts this iterable collection to the appropriate representation for the current element type A.

    Given a collection factory factory, converts this iterable collection to the appropriate representation for the current element type A. Example uses:

    xs.to(List)
    xs.to(ArrayBuffer)
    xs.to(BitSet) // for xs: Iterable[Int]
    Definition Classes
    IterableOnceOps
  98. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]

    Converts this iterable collection to an Array.

    Converts this iterable collection to an Array.

    Implementation note: DO NOT call Array.from from this method.

    B

    The type of elements of the result, a supertype of A.

    returns

    This iterable collection as an Array[B].

    Definition Classes
    IterableOnceOps
  99. final def toBuffer[B >: A]: Buffer[B]

    Converts this iterable collection to a Buffer.

    Converts this iterable collection to a Buffer.

    B

    The type of elements of the result, a supertype of A.

    returns

    This iterable collection as a Buffer[B].

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  100. def toIndexedSeq: immutable.IndexedSeq[A]

    Converts this iterable collection to an IndexedSeq.

    Converts this iterable collection to an IndexedSeq.

    returns

    This iterable collection as an IndexedSeq[A].

    Definition Classes
    IterableOnceOps
  101. def toList: immutable.List[A]

    Converts this iterable collection to a List.

    Converts this iterable collection to a List.

    returns

    This iterable collection as a List[A].

    Definition Classes
    IterableOnceOps
  102. def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]

    Converts this iterable collection to a Map, given an implicit coercion from the iterable collection's type to a key-value tuple.

    Converts this iterable collection to a Map, given an implicit coercion from the iterable collection's type to a key-value tuple.

    K

    The key type for the resulting map.

    V

    The value type for the resulting map.

    ev

    An implicit coercion from A to [K, V].

    returns

    This iterable collection as a Map[K, V].

    Definition Classes
    IterableOnceOps
  103. def toSeq: immutable.Seq[A]

    returns

    This iterable collection as a Seq[A]. This is equivalent to to(Seq) but might be faster.

    Definition Classes
    IterableOnceOps
  104. def toSet[B >: A]: immutable.Set[B]

    Converts this iterable collection to a Set.

    Converts this iterable collection to a Set.

    B

    The type of elements of the result, a supertype of A.

    returns

    This iterable collection as a Set[B].

    Definition Classes
    IterableOnceOps
  105. def toString(): String

    Returns a string representation of the object.

    Returns a string representation of the object.

    The default representation is platform dependent.

    returns

    a string representation of the object.

    Definition Classes
    Any
  106. def toVector: immutable.Vector[A]

    Converts this iterable collection to a Vector.

    Converts this iterable collection to a Vector.

    returns

    This iterable collection as a Vector[A].

    Definition Classes
    IterableOnceOps
  107. def transpose[B](implicit asIterable: (A) => Iterable[B]): CC[CC[B]]

    Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.

    Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.

    The resulting collection's type will be guided by the static type of iterable collection. For example:

    val xs = List(
               Set(1, 2, 3),
               Set(4, 5, 6)).transpose
    // xs == List(
    //         List(1, 4),
    //         List(2, 5),
    //         List(3, 6))
    
    val ys = Vector(
               List(1, 2, 3),
               List(4, 5, 6)).transpose
    // ys == Vector(
    //         Vector(1, 4),
    //         Vector(2, 5),
    //         Vector(3, 6))

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    B

    the type of the elements of each iterable collection.

    asIterable

    an implicit conversion which asserts that the element type of this iterable collection is an Iterable.

    returns

    a two-dimensional iterable collection of iterable collections which has as nth row the nth column of this iterable collection.

    Exceptions thrown

    IllegalArgumentException if all collections in this iterable collection are not of the same size.

  108. def unzip[A1, A2](implicit asPair: (A) => (A1, A2)): (CC[A1], CC[A2])

    Converts this iterable collection of pairs into two collections of the first and second half of each pair.

    Converts this iterable collection of pairs into two collections of the first and second half of each pair.

    val xs = Iterable(
               (1, "one"),
               (2, "two"),
               (3, "three")).unzip
    // xs == (Iterable(1, 2, 3),
    //        Iterable(one, two, three))
    A1

    the type of the first half of the element pairs

    A2

    the type of the second half of the element pairs

    asPair

    an implicit conversion which asserts that the element type of this iterable collection is a pair.

    returns

    a pair of iterable collections, containing the first, respectively second half of each element pair of this iterable collection.

  109. def unzip3[A1, A2, A3](implicit asTriple: (A) => (A1, A2, A3)): (CC[A1], CC[A2], CC[A3])

    Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.

    Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.

    val xs = Iterable(
               (1, "one", '1'),
               (2, "two", '2'),
               (3, "three", '3')).unzip3
    // xs == (Iterable(1, 2, 3),
    //        Iterable(one, two, three),
    //        Iterable(1, 2, 3))
    A1

    the type of the first member of the element triples

    A2

    the type of the second member of the element triples

    A3

    the type of the third member of the element triples

    asTriple

    an implicit conversion which asserts that the element type of this iterable collection is a triple.

    returns

    a triple of iterable collections, containing the first, second, respectively third member of each element triple of this iterable collection.

  110. def view: View[A]

    A view over the elements of this collection.

  111. def withFilter(p: (A) => Boolean): WithFilter[A, CC]

    Creates a non-strict filter of this iterable collection.

    Creates a non-strict filter of this iterable collection.

    Note: the difference between c filter p and c withFilter p is that the former creates a new collection, whereas the latter only restricts the domain of subsequent map, flatMap, foreach, and withFilter operations.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

    an object of class WithFilter, which supports map, flatMap, foreach, and withFilter operations. All these operations apply to those elements of this iterable collection which satisfy the predicate p.

  112. def zip[B](that: IterableOnce[B]): CC[(A, B)]

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    returns

    a new iterable collection containing pairs consisting of corresponding elements of this iterable collection and that. The length of the returned collection is the minimum of the lengths of this iterable collection and that.

  113. def zipAll[A1 >: A, B](that: Iterable[B], thisElem: A1, thatElem: B): CC[(A1, B)]

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

    that

    the iterable providing the second half of each result pair

    thisElem

    the element to be used to fill up the result if this iterable collection is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this iterable collection.

    returns

    a new collection of type That containing pairs consisting of corresponding elements of this iterable collection and that. The length of the returned collection is the maximum of the lengths of this iterable collection and that. If this iterable collection is shorter than that, thisElem values are used to pad the result. If that is shorter than this iterable collection, thatElem values are used to pad the result.

  114. def zipWithIndex: CC[(A, Int)]

    Zips this iterable collection with its indices.

    Zips this iterable collection with its indices.

    returns

    A new iterable collection containing pairs consisting of all elements of this iterable collection paired with their index. Indices start at 0.

    Definition Classes
    IterableOpsIterableOnceOps
    Example:
    1. List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))

Deprecated Value Members

  1. def ++:[B >: A](that: IterableOnce[B]): CC[B]
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use ++ instead of ++: for collections of type Iterable

  2. def /:[B](z: B)(op: (B, A) => B): B
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A])./:(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldLeft instead

  3. final def /:[B](z: B)(op: (B, A) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldLeft instead of /:

  4. def :\[B](z: B)(op: (A, B) => B): B
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).:\(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldRight instead

  5. final def :\[B](z: B)(op: (A, B) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldRight instead of :\

  6. def aggregate[B](z: => B)(seqop: (B, A) => B, combop: (B, B) => B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    Since this method degenerates to foldLeft for sequential (non-parallel) collections, where the combining operation is ignored, it is advisable to prefer foldLeft for that case.

    For parallel collections, use the aggregate method specified by scala.collection.parallel.ParIterableLike.

    B

    the result type, produced by seqop, combop, and by this function as a final result.

    z

    the start value, a neutral element for seqop.

    seqop

    the binary operator used to accumulate the result.

    combop

    an associative operator for combining sequential results, unused for sequential collections.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) For sequential collections, prefer foldLeft(z)(seqop). For parallel collections, use ParIterableLike#aggregate.

  7. def collectFirst[B](f: PartialFunction[A, B]): Option[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).collectFirst(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.collectFirst(...) instead

  8. def companion: IterableFactory[CC]
    Annotations
    @deprecated @deprecatedOverriding() @inline()
    Deprecated

    (Since version 2.13.0) Use iterableFactory instead

  9. def copyToBuffer(dest: Buffer[A]): Unit
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).copyToBuffer(dest)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.copyToBuffer(...) instead

  10. final def copyToBuffer[B >: A](dest: Buffer[B]): Unit
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use dest ++= coll instead

  11. def count(f: (A) => Boolean): Int
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).count(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.count(...) instead

  12. def exists(f: (A) => Boolean): Boolean
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).exists(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.exists(...) instead

  13. def filter(f: (A) => Boolean): Iterator[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).filter(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.filter(...) instead

  14. def find(p: (A) => Boolean): Option[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).find(p)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.find instead

  15. def flatMap[B](f: (A) => IterableOnce[B]): IterableOnce[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).flatMap(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.flatMap instead or consider requiring an Iterable

  16. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).fold(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.fold instead

  17. def foldLeft[B](z: B)(op: (B, A) => B): B
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).foldLeft(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldLeft instead

  18. def foldRight[B](z: B)(op: (A, B) => B): B
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).foldRight(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldRight instead

  19. def forall(f: (A) => Boolean): Boolean
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).forall(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.forall(...) instead

  20. def foreach[U](f: (A) => U): Unit
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).foreach(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foreach(...) instead

  21. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toStringFormat[IterableOps[A, CC, C]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  22. def hasDefiniteSize: Boolean

    Tests whether this iterable collection is known to have a finite size.

    Tests whether this iterable collection is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as Stream, the predicate returns true if all elements have been computed. It returns false if the stream is not yet evaluated to the end. Non-empty Iterators usually return false even if they were created from a collection with a known finite size.

    Note: many collection methods will not work on collections of infinite sizes. The typical failure mode is an infinite loop. These methods always attempt a traversal without checking first that hasDefiniteSize returns true. However, checking hasDefiniteSize can provide an assurance that size is well-defined and non-termination is not a concern.

    returns

    true if this collection is known to have finite size, false otherwise.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Check .knownSize instead of .hasDefiniteSize for more actionable information (see scaladoc for details)

    See also

    method knownSize for a more useful alternative

  23. def isEmpty: Boolean
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).isEmpty
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.isEmpty instead

  24. def map[B](f: (A) => B): IterableOnce[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).map(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.map instead or consider requiring an Iterable

  25. def max(implicit ord: math.Ordering[A]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).max(ord)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.max instead

  26. def maxBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).maxBy(f)(cmp)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.maxBy(...) instead

  27. def min(implicit ord: math.Ordering[A]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).min(ord)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.min instead

  28. def minBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).minBy(f)(cmp)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.minBy(...) instead

  29. def mkString: String
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).mkString
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.mkString instead

  30. def mkString(sep: String): String
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).mkString(sep)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.mkString instead

  31. def mkString(start: String, sep: String, end: String): String
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).mkString(start, sep, end)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.mkString instead

  32. def nonEmpty: Boolean
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).nonEmpty
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.nonEmpty instead

  33. def product(implicit num: math.Numeric[A]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).product(num)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.product instead

  34. def reduce(f: (A, A) => A): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduce(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduce(...) instead

  35. def reduceLeft(f: (A, A) => A): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduceLeft(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduceLeft(...) instead

  36. def reduceLeftOption(f: (A, A) => A): Option[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduceLeftOption(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduceLeftOption(...) instead

  37. def reduceOption(f: (A, A) => A): Option[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduceOption(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduceOption(...) instead

  38. def reduceRight(f: (A, A) => A): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduceRight(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduceRight(...) instead

  39. def reduceRightOption(f: (A, A) => A): Option[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).reduceRightOption(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.reduceRightOption(...) instead

  40. final def repr: C
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use coll instead of repr in a collection implementation, use the collection value itself from the outside

  41. def sameElements[B >: A](that: IterableOnce[B]): Boolean
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.sameElements instead

  42. def size: Int
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).size
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.size instead

  43. def sum(implicit num: math.Numeric[A]): A
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).sum(num)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.sum instead

  44. def to[C1](factory: Factory[A, C1]): C1
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).to(factory)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.to(factory) instead

  45. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toArray(arg0)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.toArray

  46. def toBuffer[B >: A]: Buffer[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toBuffer
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.to(ArrayBuffer) instead

  47. def toIndexedSeq: IndexedSeq[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toIndexedSeq
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.toIndexedSeq instead

  48. final def toIterable: Iterable[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toIterable
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Iterable) instead

  49. def toIterator: Iterator[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toIterator
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator instead

  50. final def toIterator: Iterator[A]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator instead of .toIterator

  51. def toList: immutable.List[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toList
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.to(List) instead

  52. def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toMap(ev)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Map) instead

  53. def toSeq: immutable.Seq[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toSeq
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Seq) instead

  54. def toSet[B >: A]: immutable.Set[B]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toSet
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Set) instead

  55. def toStream: immutable.Stream[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toStream
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(LazyList) instead

  56. final def toStream: immutable.Stream[A]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .to(LazyList) instead of .toStream

  57. final def toTraversable: Traversable[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toTraversable
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Iterable) instead

  58. final def toTraversable: Traversable[A]

    Converts this iterable collection to an unspecified Iterable.

    Converts this iterable collection to an unspecified Iterable. Will return the same collection if this instance is already Iterable.

    returns

    An Iterable containing all elements of this iterable collection.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) toTraversable is internal and will be made protected; its name is similar to toList or toSeq, but it doesn't copy non-immutable collections

  59. def toVector: immutable.Vector[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).toVector
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Vector) instead

  60. def view(from: Int, until: Int): View[A]

    A view over a slice of the elements of this collection.

    A view over a slice of the elements of this collection.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)

  61. def withFilter(f: (A) => Boolean): Iterator[A]
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (iterableOps: IterableOnceExtensionMethods[A]).withFilter(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.withFilter(...) instead

  62. def [B](y: B): (IterableOps[A, CC, C], B)
    Implicit
    This member is added by an implicit conversion from IterableOps[A, CC, C] toArrowAssoc[IterableOps[A, CC, C]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from IterableOnceOps[A, CC, C]

Inherited from IterableOnce[A]

Inherited from Any

Inherited by implicit conversion iterableOnceExtensionMethods fromIterableOps[A, CC, C] to IterableOnceExtensionMethods[A]

Inherited by implicit conversion any2stringadd fromIterableOps[A, CC, C] to any2stringadd[IterableOps[A, CC, C]]

Inherited by implicit conversion StringFormat fromIterableOps[A, CC, C] to StringFormat[IterableOps[A, CC, C]]

Inherited by implicit conversion Ensuring fromIterableOps[A, CC, C] to Ensuring[IterableOps[A, CC, C]]

Inherited by implicit conversion ArrowAssoc fromIterableOps[A, CC, C] to ArrowAssoc[IterableOps[A, CC, C]]

Ungrouped