Iterator

Companion object Iterator

trait Iterator[+A] extends IterableOnce[A]

A core Iterator class

Self Type: Iterator[A]

Linear Supertypes

IterableOnce[A], AnyRef, Any

Known Subclasses

AbstractIterator, BufferedIterator, GroupedIterator, VectorIterator

Ordering

Alphabetic
By Inheritance

Inherited

Iterator
IterableOnce
AnyRef
Any

Implicitly

by iterableOnceExtensionMethods
by toOldIterator

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Visibility

Public
All

Type Members

class GroupedIterator[B >: A] extends Iterator[Seq[B]]
A flexible iterator for transforming an Iterator[A] into an Iterator[Seq[A]], with configurable sequence size, step, and strategy for dealing with elements which don't fit evenly.
A flexible iterator for transforming an Iterator[A] into an Iterator[Seq[A]], with configurable sequence size, step, and strategy for dealing with elements which don't fit evenly.
Typical uses can be achieved via methods grouped and sliding.

Abstract Value Members

abstract def hasNext: Boolean
abstract def next(): A

Annotations
@throws( ... )

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
def ++[B >: A](xs: ⇒ IterableOnce[B]): Iterator[B]

Annotations
@inline()
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder
Appends all elements of this iterator to a string builder using start, end, and separator strings.
Appends all elements of this iterator 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 iterator 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.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def buffered: BufferedIterator[A]
Creates a buffered iterator from this iterator.
Creates a buffered iterator from this iterator.
returns
a buffered iterator producing the same values as this iterator.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
See also
scala.collection.BufferedIterator
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@native() @throws( ... )
def collect[B](pf: PartialFunction[A, B]): Iterator[B]
Creates an iterator by transforming values produced by this iterator with a partial function, dropping those values for which the partial function is not defined.
Creates an iterator by transforming values produced by this iterator with a partial function, dropping those values for which the partial function is not defined.
pf
the partial function which filters and maps the iterator.
returns
a new iterator which yields each value x produced by this iterator for which pf is defined the image pf(x).

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def collectFirst[B](pf: PartialFunction[A, B]): Option[B]
Finds the first element of the iterator for which the given partial function is defined, and applies the partial function to it.
Finds the first element of the iterator for which the given partial function is defined, and applies the partial function to it.
Note: may not terminate for infinite iterators.
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.
Example:
1. Seq("a", 1, 5L).iterator().collectFirst({ case x: Int => x*10 }) = Some(10)
def concat[B >: A](xs: ⇒ IterableOnce[B]): Iterator[B]
def contains(elem: Any): Boolean
Tests whether this iterator contains a given value as an element.
Tests whether this iterator contains a given value as an element.
Note: may not terminate for infinite iterators.
elem
the element to test.
returns
true if this iterator produces some value that is is equal (as determined by ==) to elem, false otherwise.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def count(p: (A) ⇒ Boolean): Int
Counts the number of elements in the iterator which satisfy a predicate.
Counts the number of elements in the iterator which satisfy a predicate.
p
the predicate used to test elements.
returns
the number of elements satisfying the predicate p.
def distinct: Iterator[A]
Builds a new iterator from this one without any duplicated elements on it.
Builds a new iterator from this one without any duplicated elements on it.
returns
iterator with distinct elements

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def distinctBy[B](f: (A) ⇒ B): Iterator[A]
Builds a new iterator from this one without any duplicated elements as determined by == after applying the transforming function f.
Builds a new iterator from this one without any duplicated elements as determined by == after applying the transforming function f.
B
the type of the elements after being transformed by f
f
The transforming function whose result is used to determine the uniqueness of each element
returns
iterator with distinct elements

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def drop(n: Int): Iterator[A]
def dropWhile(p: (A) ⇒ Boolean): Iterator[A]
Skips longest sequence of elements of this iterator which satisfy given predicate p, and returns an iterator of the remaining elements.
Skips longest sequence of elements of this iterator which satisfy given predicate p, and returns an iterator of the remaining elements.
p
the predicate used to skip elements.
returns
an iterator consisting of the remaining elements

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def exists(p: (A) ⇒ Boolean): Boolean
Tests whether a predicate holds for some of the values produced by this iterator.
Tests whether a predicate holds for some of the values produced by this iterator.
Note: may not terminate for infinite iterators.
p
the predicate used to test elements.
returns
true if the given predicate p holds for some of the values produced by this iterator, otherwise false.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def filter(p: (A) ⇒ Boolean): Iterator[A]
Selects all elements of this iterator which satisfy a predicate.
Selects all elements of this iterator which satisfy a predicate.
p
the predicate used to test elements.
returns
a new iterator consisting of all elements of this iterator that satisfy the given predicate p. The order of the elements is preserved.
def filterNot(p: (A) ⇒ Boolean): Iterator[A]
Creates an iterator over all the elements of this iterator which do not satisfy a predicate p.
Creates an iterator over all the elements of this iterator which do not satisfy a predicate p.
p
the predicate used to test values.
returns
an iterator which produces those values of this iterator which do not satisfy the predicate p.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def find(p: (A) ⇒ Boolean): Option[A]
Finds the first value produced by the iterator satisfying a predicate, if any.
Finds the first value produced by the iterator satisfying a predicate, if any.
Note: may not terminate for infinite iterators.
p
the predicate used to test values.
returns
an option value containing the first value produced by the iterator that satisfies predicate p, or None if none exists.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def flatMap[B](f: (A) ⇒ IterableOnce[B]): Iterator[B]
def flatten[B](implicit ev: (A) ⇒ IterableOnce[B]): Iterator[B]
def foldLeft[B](z: B)(op: (B, A) ⇒ B): B
def foldRight[B](z: B)(op: (A, B) ⇒ B): B
def forall(p: (A) ⇒ Boolean): Boolean
Tests whether a predicate holds for all values produced by this iterator.
Tests whether a predicate holds for all values produced by this iterator.
Note: may not terminate for infinite iterators.
p
the predicate used to test elements.
returns
true if the given predicate p holds for all values produced by this iterator, otherwise false.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def foreach[U](f: (A) ⇒ U): Unit
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@native()
def grouped[B >: A](size: Int): GroupedIterator[B]
Returns an iterator which groups this iterator into fixed size blocks.
Returns an iterator which groups this iterator into fixed size blocks. Example usages:
```
// Returns List(List(1, 2, 3), List(4, 5, 6), List(7)))
(1 to 7).iterator grouped 3 toList
// Returns List(List(1, 2, 3), List(4, 5, 6))
(1 to 7).iterator grouped 3 withPartial false toList
// Returns List(List(1, 2, 3), List(4, 5, 6), List(7, 20, 25)
// Illustrating that withPadding's argument is by-name.
val it2 = Iterator.iterate(20)(_ + 5)
(1 to 7).iterator grouped 3 withPadding it2.next toList
```
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def hashCode(): Int

Definition Classes
AnyRef → Any
Annotations
@native()
def indexOf[B >: A](elem: B, from: Int): Int
Returns the index of the first occurrence of the specified object in this iterable object after or at some start index.
Returns the index of the first occurrence of the specified object in this iterable object after or at some start index.
Note: may not terminate for infinite iterators.
elem
element to search for.
from
the start index
returns
the index >= from of the first occurrence of elem in the values produced by this iterator, or -1 if such an element does not exist until the end of the iterator is reached.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def indexOf[B >: A](elem: B): Int
Returns the index of the first occurrence of the specified object in this iterable object.
Returns the index of the first occurrence of the specified object in this iterable object.
Note: may not terminate for infinite iterators.
elem
element to search for.
returns
the index of the first occurrence of elem in the values produced by this iterator, or -1 if such an element does not exist until the end of the iterator is reached.

Note
Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
def indexWhere(p: (A) ⇒ Boolean, from: Int = 0): Int
def isEmpty: Boolean
Tests whether this iterator is empty.
Tests whether this iterator is empty.
returns
true if hasNext is false, false otherwise.

Note
Reuse: The iterator remains valid for further use whatever result is returned.
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
val it: Iterator[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to toOldIterator[A] performed by method toOldIterator in strawman.collection.
Definition Classes
toOldIterator
def iterator(): Iterator[A]
Iterator can be used only once
Iterator can be used only once

Definition Classes
Iterator → IterableOnce
def knownSize: Int
returns
the remaining number of elements, if it can be computed in O(1) time, otherwise -1

Definition Classes
Iterator → IterableOnce
def length: Int
def map[B](f: (A) ⇒ B): Iterator[B]
def max: A
[use case] Finds the largest element.
[use case]
Finds the largest element.
returns
the largest element of this iterator.

Full Signature
def max[B >: A](implicit ord: Ordering[B]): A
def maxBy[B](f: (A) ⇒ B): A
[use case] Finds the first element which yields the largest value measured by function f.
[use case]
Finds the first element which yields the largest value measured by function f.
B
The result type of the function f.
f
The measuring function.
returns
the first element of this iterator with the largest value measured by function f.

Full Signature
def maxBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A
def min: A
[use case] Finds the smallest element.
[use case]
Finds the smallest element.
returns
the smallest element of this iterator

Full Signature
def min[B >: A](implicit ord: Ordering[B]): A
def minBy[B](f: (A) ⇒ B): A
[use case] Finds the first element which yields the smallest value measured by function f.
[use case]
Finds the first element which yields the smallest value measured by function f.
B
The result type of the function f.
f
The measuring function.
returns
the first element of this iterator with the smallest value measured by function f.

Full Signature
def minBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A
def mkString: String
def mkString(sep: String): String
def mkString(start: String, sep: String, end: String): String
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def nextOption(): Option[A]
Wraps the value of next() in an option.
Wraps the value of next() in an option.
returns
Some(next) if a next element exists, None otherwise.
final def nonEmpty: Boolean
Tests whether this iterator is not empty, same as hasNext.
Tests whether this iterator is not empty, same as hasNext.
returns
true if hasNext is true, false otherwise.

Annotations
@inline()
Note
Reuse: The iterator remains valid for further use whatever result is returned.
final def notify(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit

Definition Classes
AnyRef
Annotations
@native()
def patch[B >: A](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]
Returns this iterator with patched values.
Returns this iterator with patched values. Patching at negative indices is the same as patching starting at 0. Patching at indices at or larger than the length of the original iterator appends the patch to the end. If more values are replaced than actually exist, the excess is ignored.
from
The start index from which to patch
patchElems
The iterator of patch values
replaced
The number of values in the original iterator that are replaced by the patch.

Note
Reuse: After calling this method, one should discard the iterator it was called on, as well as the one passed as a parameter, and use only the iterator that was returned. Using the old iterators is undefined, subject to change, and may result in changes to the new iterator as well.
def product: A
[use case] Multiplies up the elements of this collection.
[use case]
Multiplies up the elements of this collection.
returns
the product of all elements in this iterator of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the iterator and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

Full Signature
def product[B >: A](implicit num: Numeric[B]): B
def reduce[B >: A](op: (B, B) ⇒ B): B
Reduces the elements of this iterator using the specified associative binary operator.
Reduces the elements of this iterator using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
B
A type parameter for the binary operator, a supertype of A.
op
A binary operator that must be associative.
returns
The result of applying reduce operator op between all the elements if the iterator is nonempty.

Exceptions thrown
UnsupportedOperationException if this iterator is empty.
def reduceLeft[B >: A](op: (B, A) ⇒ B): B
Applies a binary operator to all elements of this iterator, going left to right.
Applies a binary operator to all elements of this iterator, going left to right.
Note: will not terminate for infinite iterators.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this iterator, going left to right:
```
op( op( ... op(x_1, x_2) ..., x_{n-1}), x_n)
```
where x₁, ..., x_n are the elements of this iterator.
Exceptions thrown
UnsupportedOperationException if this iterator is empty.
def reduceLeftOption[B >: A](op: (B, A) ⇒ B): Option[B]
Optionally applies a binary operator to all elements of this iterator, going left to right.
Optionally applies a binary operator to all elements of this iterator, going left to right.
Note: will not terminate for infinite iterators.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
an option value containing the result of reduceLeft(op) if this iterator is nonempty, None otherwise.
def reduceOption[B >: A](op: (B, B) ⇒ B): Option[B]
Reduces the elements of this iterator, if any, using the specified associative binary operator.
Reduces the elements of this iterator, if any, using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
B
A type parameter for the binary operator, a supertype of A.
op
A binary operator that must be associative.
returns
An option value containing result of applying reduce operator op between all the elements if the collection is nonempty, and None otherwise.
def reduceRight[B >: A](op: (A, B) ⇒ B): B
Applies a binary operator to all elements of this iterator, going right to left.
Applies a binary operator to all elements of this iterator, going right to left.
Note: will not terminate for infinite iterators.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this iterator, going right to left:
```
op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))
```
where x₁, ..., x_n are the elements of this iterator.
Exceptions thrown
UnsupportedOperationException if this iterator is empty.
def reduceRightOption[B >: A](op: (A, B) ⇒ B): Option[B]
Optionally applies a binary operator to all elements of this iterator, going right to left.
Optionally applies a binary operator to all elements of this iterator, going right to left.
Note: will not terminate for infinite iterators.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
an option value containing the result of reduceRight(op) if this iterator is nonempty, None otherwise.
def reversed: Iterable[A]

Attributes
protected[this]
def sameElements[B >: A](that: IterableOnce[B]): Boolean
def scanLeft[B](z: B)(op: (B, A) ⇒ B): Iterator[B]
Produces a collection containing cumulative results of applying the operator going left to right.
Produces a collection containing cumulative results of applying the operator going left to right.
Note: will not terminate for infinite iterators.
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
iterator with intermediate results

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
final def size: Int
def slice(from: Int, until: Int): Iterator[A]
Creates an iterator returning an interval of the values produced by this iterator.
Creates an iterator returning an interval of the values produced by this iterator.
from
the index of the first element in this iterator which forms part of the slice. If negative, the slice starts at zero.
until
the index of the first element following the slice. If negative, the slice is empty.
returns
an iterator which advances this iterator past the first from elements using drop, and then takes until - from elements, using take.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def sliceIterator(from: Int, until: Int): Iterator[A]
Creates an optionally bounded slice, unbounded if until is negative.
Creates an optionally bounded slice, unbounded if until is negative.

Attributes
protected
def sliding[B >: A](size: Int, step: Int = 1): GroupedIterator[B]
Returns an iterator which presents a "sliding window" view of this iterator.
Returns an iterator which presents a "sliding window" view of this iterator. The first argument is the window size, and the second argument step is how far to advance the window on each iteration. The step defaults to 1.
The default GroupedIterator can be configured to either pad a partial result to size size or suppress the partial result entirely.
Example usages:
```
// Returns List(List(1, 2, 3), List(2, 3, 4), List(3, 4, 5))
(1 to 5).iterator.sliding(3).toList
// Returns List(List(1, 2, 3, 4), List(4, 5))
(1 to 5).iterator.sliding(4, 3).toList
// Returns List(List(1, 2, 3, 4))
(1 to 5).iterator.sliding(4, 3).withPartial(false).toList
// Returns List(List(1, 2, 3, 4), List(4, 5, 20, 25))
// Illustrating that withPadding's argument is by-name.
val it2 = Iterator.iterate(20)(_ + 5)
(1 to 5).iterator.sliding(4, 3).withPadding(it2.next).toList
```
returns
An iterator producing Seq[B]s of size size, except the last element (which may be the only element) will be truncated if there are fewer than size elements remaining to be grouped. This behavior can be configured.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def sum: A
[use case] Sums up the elements of this collection.
[use case]
Sums up the elements of this collection.
returns
the sum of all elements in this iterator of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the iterator and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

Full Signature
def sum[B >: A](implicit num: Numeric[B]): B
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def take(n: Int): Iterator[A]
def takeWhile(p: (A) ⇒ Boolean): Iterator[A]
Takes longest prefix of values produced by this iterator that satisfy a predicate.
Takes longest prefix of values produced by this iterator that satisfy a predicate.
p
The predicate used to test elements.
returns
An iterator returning the values produced by this iterator, until this iterator produces a value that does not satisfy the predicate p.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def to[C](factory: Factory[A, C]): C
Converts this Iterator into another collection.
Converts this Iterator into another collection.
C
The collection type to build.
factory
Collection factory to use. The factory may or may not eagerly consume this iterator.
returns
a new collection containing all elements of this Iterator.
def toClassic: scala.Iterator[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to toOldIterator[A] performed by method toOldIterator in strawman.collection.
Definition Classes
toOldIterator
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@native() @throws( ... )
def withFilter(p: (A) ⇒ Boolean): Iterator[A]
Creates an iterator over all the elements of this iterator that satisfy the predicate p.
Creates an iterator over all the elements of this iterator that satisfy the predicate p. The order of the elements is preserved.
Note: withFilter is the same as filter on iterators. It exists so that for-expressions with filters work over iterators.
p
the predicate used to test values.
returns
an iterator which produces those values of this iterator which satisfy the predicate p.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def zip[B](that: IterableOnce[B]): Iterator[(A, B)]
def zipAll[A1 >: A, B](that: IterableOnce[B], thisElem: A1, thatElem: B): Iterator[(A1, B)]
def zipWithIndex: Iterator[(A, Int)]
Creates an iterator that pairs each element produced by this iterator with its index, counting from 0.
Creates an iterator that pairs each element produced by this iterator with its index, counting from 0.
returns
a new iterator containing pairs consisting of corresponding elements of this iterator and their indices.

Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

Deprecated Value Members

def /:[B](z: B)(op: (B, A) ⇒ B): B

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator().foldLeft instead of /: on IterableOnce
def :\[B](z: B)(op: (A, B) ⇒ B): B

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator().foldRight instead of :\ on IterableOnce
def find(p: (A) ⇒ Boolean): Option[A]
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).find(p)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().find instead of .find on IterableOnce
def flatMap[B](f: (A) ⇒ IterableOnce[B]): IterableOnce[B]
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).flatMap(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().flatMap instead of .flatMap on IterableOnce or consider requiring an Iterable
def foldLeft[B](z: B)(op: (B, A) ⇒ B): B
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).foldLeft(z)(op)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator().foldLeft instead of .foldLeft on IterableOnce
def foldRight[B](z: B)(op: (A, B) ⇒ B): B
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).foldRight(z)(op)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator().foldRight instead of .foldLeft on IterableOnce
def foreach[U](f: (A) ⇒ U): Unit
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).foreach(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator().foreach(...) instead of .foreach(...) on IterableOnce
def isEmpty: Boolean
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).isEmpty
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().isEmpty instead of .isEmpty on IterableOnce
def map[B](f: (A) ⇒ B): IterableOnce[B]
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).map(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().map instead of .map on IterableOnce or consider requiring an Iterable
def mkString: String
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).mkString
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().mkString instead of .mkString on IterableOnce
def mkString(sep: String): String
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).mkString(sep)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().mkString instead of .mkString on IterableOnce
def mkString(start: String, sep: String, end: String): String
Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.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:
(iterator: IterableOnceExtensionMethods[A]).mkString(start, sep, end)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator().mkString instead of .mkString on IterableOnce
def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use ArrayBuffer.from(it).toArray
def toBuffer[B >: A]: Buffer[B]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use ArrayBuffer.from(it) instead of it.toBuffer
def toIterator: Iterator[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) toIterator has been renamed to iterator()
def toList: List[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use List.from(it) instead of it.toList
def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use Map.from(it) instead of it.toVector on IterableOnce
def toSeq: immutable.Seq[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use Seq.from(it) instead of it.toSeq
def toSet[B >: A]: immutable.Set[B]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use Set.from(it) instead of it.toSet
def toStream: LazyList[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use LazyList.from(it) instead of it.toStream
def toVector: Vector[A]

Implicit
This member is added by an implicit conversion from Iterator[A] to IterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in strawman.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use Vector.from(it) instead of it.toVector on IterableOnce

Packages

Iterator

Companion object Iterator

trait Iterator[+A] extends IterableOnce[A]

Type Members

Abstract Value Members

Concrete Value Members

def max[B >: A](implicit ord: Ordering[B]): A

def maxBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

def min[B >: A](implicit ord: Ordering[B]): A

def minBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

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

def sum[B >: A](implicit num: Numeric[B]): B

Deprecated Value Members

Inherited from IterableOnce[A]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion iterableOnceExtensionMethods from Iterator[A] to IterableOnceExtensionMethods[A]

Inherited by implicit conversion toOldIterator from Iterator[A] to toOldIterator[A]

Ungrouped

Packages

Iterator 

Companion object Iterator

trait Iterator[+A] extends IterableOnce[A]

Type Members

Abstract Value Members

Concrete Value Members

def max[B >: A](implicit ord: Ordering[B]): A

def maxBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

def min[B >: A](implicit ord: Ordering[B]): A

def minBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

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

def sum[B >: A](implicit num: Numeric[B]): B

Deprecated Value Members

Inherited from IterableOnce[A]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion iterableOnceExtensionMethods from Iterator[A] to IterableOnceExtensionMethods[A]

Inherited by implicit conversion toOldIterator from Iterator[A] to toOldIterator[A]

Ungrouped

Iterator