Object/Trait

scala.collection

Iterator

Related Docs: trait Iterator | package collection

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object Iterator

The Iterator object provides various functions for creating specialized iterators.

Version: 2.8
Since: 2.8

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final def !=(arg0: Any): Boolean

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final def ##(): Int

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final def ==(arg0: Any): Boolean

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implicit def IteratorCanBuildFrom[A]: BufferedCanBuildFrom[A, Iterator]

With the advent of TraversableOnce and Iterator, it can be useful to have a builder which operates on Iterators so they can be treated uniformly along with the collections.
With the advent of TraversableOnce and Iterator, it can be useful to have a builder which operates on Iterators so they can be treated uniformly along with the collections. See scala.util.Random.shuffle for an example.
def apply[A](elems: A*): Iterator[A]

Creates an iterator with given elements.
Creates an iterator with given elements.
elems
The elements returned one-by-one from the iterator
returns
An iterator which produces the given elements on the first calls to next, and which has no further elements.
final def asInstanceOf[T0]: T0

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def clone(): AnyRef

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protected[java.lang]
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@throws( ... )
def continually[A](elem: ⇒ A): Iterator[A]

Creates an infinite-length iterator returning the results of evaluating an expression.
Creates an infinite-length iterator returning the results of evaluating an expression. The expression is recomputed for every element.
elem
the element computation.
returns
the iterator containing an infinite number of results of evaluating elem.
val empty: Iterator[Nothing]

The iterator which produces no values.
final def eq(arg0: AnyRef): Boolean

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def equals(arg0: Any): Boolean

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def fill[A](len: Int)(elem: ⇒ A): Iterator[A]

Creates iterator that produces the results of some element computation a number of times.
Creates iterator that produces the results of some element computation a number of times.
len
the number of elements returned by the iterator.
elem
the element computation
returns
An iterator that produces the results of n evaluations of elem.
def finalize(): Unit

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protected[java.lang]
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@throws( classOf[java.lang.Throwable] )
def from(start: Int, step: Int): Iterator[Int]

Creates an infinite-length iterator returning values equally spaced apart.
Creates an infinite-length iterator returning values equally spaced apart.
start
the start value of the iterator
step
the increment between successive values
returns
the iterator producing the infinite sequence of values start, start + 1 * step, start + 2 * step, ...
def from(start: Int): Iterator[Int]

Creates an infinite-length iterator which returns successive values from some start value.
Creates an infinite-length iterator which returns successive values from some start value.
start
the start value of the iterator
returns
the iterator producing the infinite sequence of values start, start + 1, start + 2, ...
final def getClass(): Class[_]

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def hashCode(): Int

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final def isInstanceOf[T0]: Boolean

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def iterate[T](start: T)(f: (T) ⇒ T): Iterator[T]

Creates an infinite iterator that repeatedly applies a given function to the previous result.
Creates an infinite iterator that repeatedly applies a given function to the previous result.
start
the start value of the iterator
f
the function that's repeatedly applied
returns
the iterator producing the infinite sequence of values start, f(start), f(f(start)), ...
final def ne(arg0: AnyRef): Boolean

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final def notify(): Unit

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final def notifyAll(): Unit

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def range(start: Int, end: Int, step: Int): Iterator[Int]

An iterator producing equally spaced values in some integer interval.
An iterator producing equally spaced values in some integer interval.
start
the start value of the iterator
end
the end value of the iterator (the first value NOT returned)
step
the increment value of the iterator (must be positive or negative)
returns
the iterator producing values start, start + step, ... up to, but excluding end
def range(start: Int, end: Int): Iterator[Int]

Creates nn iterator returning successive values in some integer interval.
Creates nn iterator returning successive values in some integer interval.
start
the start value of the iterator
end
the end value of the iterator (the first value NOT returned)
returns
the iterator producing values start, start + 1, ..., end - 1
def single[A](elem: A): Iterator[A]

Creates an iterator which produces a single element.
Creates an iterator which produces a single element. Note: Equivalent, but more efficient than Iterator(elem)
elem
the element
returns
An iterator which produces elem on the first call to next, and which has no further elements.
final def synchronized[T0](arg0: ⇒ T0): T0

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def tabulate[A](end: Int)(f: (Int) ⇒ A): Iterator[A]

Creates an iterator producing the values of a given function over a range of integer values starting from 0.
Creates an iterator producing the values of a given function over a range of integer values starting from 0.
end
The number of elements returned by the iterator
f
The function computing element values
returns
An iterator that produces the values f(0), ..., f(n -1).
def toString(): String

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final def wait(): Unit

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final def wait(arg0: Long, arg1: Int): Unit

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final def wait(arg0: Long): Unit

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