Stream

Type Members

type Coll = Stream[_]

The underlying collection type with unknown element type
The underlying collection type with unknown element type

Attributes
protected[this]
Definition Classes
GenericCompanion
final class Cons[+A] extends Stream[A]

A lazy cons cell, from which streams are built.
A lazy cons cell, from which streams are built.

Annotations
@SerialVersionUID()
class ConsWrapper[A] extends AnyRef

A wrapper class that adds #:: for cons and #::: for concat as operations to streams.
class GenericCanBuildFrom[A] extends CanBuildFrom[CC[_], A, CC[A]]

A generic implementation of the CanBuildFrom trait, which forwards all calls to apply(from) to the genericBuilder method of collection from, and which forwards all calls of apply() to the newBuilder method of this factory.
A generic implementation of the CanBuildFrom trait, which forwards all calls to apply(from) to the genericBuilder method of collection from, and which forwards all calls of apply() to the newBuilder method of this factory.

Definition Classes
GenTraversableFactory
class StreamBuilder[A] extends LazyBuilder[A, Stream[A]]

A builder for streams
A builder for streams

Note
This builder is lazy only in the sense that it does not go downs the spine of traversables that are added as a whole. If more laziness can be achieved, this builder should be bypassed.
class StreamCanBuildFrom[A] extends GenericCanBuildFrom[A]

The factory for streams.
The factory for streams.

Note
Methods such as map/flatMap will not invoke the Builder factory, but will return a new stream directly, to preserve laziness. The new stream is then cast to the factory's result type. This means that every CanBuildFrom that takes a Stream as its From type parameter must yield a stream as its result parameter. If that assumption is broken, cast errors might result.

Value Members

final def !=(arg0: Any): Boolean

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

Definition Classes
AnyRef → Any
object #::

An extractor that allows to pattern match streams with #::.
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
object Empty extends Stream[Nothing]
def ReusableCBF: GenericCanBuildFrom[Nothing]

Definition Classes
GenTraversableFactory
def apply[A](xs: A*): Stream[A]

A stream consisting of given elements
A stream consisting of given elements
A
the type of the collection's elements
returns
a new collection with elements elems

Definition Classes
Stream → GenericCompanion
final def asInstanceOf[T0]: T0

Definition Classes
Any
implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, Stream[A]]
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def concat[A](xss: collection.Traversable[A]*): Stream[A]

Concatenates all argument collections into a single collection.
Concatenates all argument collections into a single collection.
xss
the collections that are to be concatenated.
returns
the concatenation of all the collections.

Definition Classes
GenTraversableFactory
object cons

An alternative way of building and matching Streams using Stream.cons(hd, tl).
implicit def consWrapper[A](stream: ⇒ Stream[A]): ConsWrapper[A]

A wrapper method that adds #:: for cons and #::: for concat as operations to streams.
def continually[A](elem: ⇒ A): Stream[A]

Create an infinite stream containing the given element expression (which is computed for each occurrence).
Create an infinite stream containing the given element expression (which is computed for each occurrence).
elem
the element composing the resulting stream
returns
the stream containing an infinite number of elem
def empty[A]: Stream[A]

The empty stream
The empty stream
A
the type of the collection's elements

Definition Classes
Stream → GenericCompanion
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
def fill[A](n: Int)(elem: ⇒ A): Stream[A]

Produces a collection containing the results of some element computation a number of times.
Produces a collection containing the results of some element computation a number of times.
n
the number of elements contained in the collection.
elem
the element computation
returns
A collection that contains the results of n evaluations of elem.

Definition Classes
Stream → GenTraversableFactory
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: ⇒ A): Stream[Stream[Stream[Stream[Stream[A]]]]]

Produces a five-dimensional collection containing the results of some element computation a number of times.
Produces a five-dimensional collection containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
n4
the number of elements in the 4th dimension
n5
the number of elements in the 5th dimension
elem
the element computation
returns
A collection that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem.

Definition Classes
GenTraversableFactory
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: ⇒ A): Stream[Stream[Stream[Stream[A]]]]

Produces a four-dimensional collection containing the results of some element computation a number of times.
Produces a four-dimensional collection containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
n4
the number of elements in the 4th dimension
elem
the element computation
returns
A collection that contains the results of n1 x n2 x n3 x n4 evaluations of elem.

Definition Classes
GenTraversableFactory
def fill[A](n1: Int, n2: Int, n3: Int)(elem: ⇒ A): Stream[Stream[Stream[A]]]

Produces a three-dimensional collection containing the results of some element computation a number of times.
Produces a three-dimensional collection containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
elem
the element computation
returns
A collection that contains the results of n1 x n2 x n3 evaluations of elem.

Definition Classes
GenTraversableFactory
def fill[A](n1: Int, n2: Int)(elem: ⇒ A): Stream[Stream[A]]

Produces a two-dimensional collection containing the results of some element computation a number of times.
Produces a two-dimensional collection containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
elem
the element computation
returns
A collection that contains the results of n1 x n2 evaluations of elem.

Definition Classes
GenTraversableFactory
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def from(start: Int): Stream[Int]

Create an infinite stream starting at start and incrementing by 1.
Create an infinite stream starting at start and incrementing by 1.
start
the start value of the stream
returns
the stream starting at value start.
def from(start: Int, step: Int): Stream[Int]

Create an infinite stream starting at start and incrementing by step step.
Create an infinite stream starting at start and incrementing by step step.
start
the start value of the stream
step
the increment value of the stream
returns
the stream starting at value start.
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def iterate[A](start: A, len: Int)(f: (A) ⇒ A): Stream[A]

Produces a collection containing repeated applications of a function to a start value.
Produces a collection containing repeated applications of a function to a start value.
start
the start value of the collection
len
the number of elements contained inthe collection
f
the function that's repeatedly applied
returns
a collection with len values in the sequence start, f(start), f(f(start)), ...

Definition Classes
Stream → GenTraversableFactory
def iterate[A](start: A)(f: (A) ⇒ A): Stream[A]

An infinite stream that repeatedly applies a given function to a start value.
An infinite stream that repeatedly applies a given function to a start value.
start
the start value of the stream
f
the function that's repeatedly applied
returns
the stream returning the infinite sequence of values start, f(start), f(f(start)), ...
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def newBuilder[A]: Builder[A, Stream[A]]

Creates a new builder for a stream
Creates a new builder for a stream
A
the type of the collection's elements

Definition Classes
Stream → GenericCompanion
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def range[T](start: T, end: T, step: T)(implicit arg0: Integral[T]): Stream[T]

Produces a collection containing equally spaced values in some integer interval.
Produces a collection containing equally spaced values in some integer interval.
start
the start value of the collection
end
the end value of the collection (the first value NOT contained)
step
the difference between successive elements of the collection (must be positive or negative)
returns
a collection with values start, start + step, ... up to, but excluding end

Definition Classes
Stream → GenTraversableFactory
def range[T](start: T, end: T)(implicit arg0: Integral[T]): Stream[T]

Produces a collection containing a sequence of increasing of integers.
Produces a collection containing a sequence of increasing of integers.
start
the first element of the collection
end
the end value of the collection (the first value NOT contained)
returns
a collection with values start, start + 1, ..., end - 1

Definition Classes
GenTraversableFactory
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def tabulate[A](n: Int)(f: (Int) ⇒ A): Stream[A]

Produces a collection containing values of a given function over a range of integer values starting from 0.
Produces a collection containing values of a given function over a range of integer values starting from 0.
n
The number of elements in the collection
f
The function computing element values
returns
A collection consisting of elements f(0), ..., f(n -1)

Definition Classes
Stream → GenTraversableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) ⇒ A): Stream[Stream[Stream[Stream[Stream[A]]]]]

Produces a five-dimensional collection containing values of a given function over ranges of integer values starting from 0.
Produces a five-dimensional collection containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
n4
the number of elements in the 4th dimension
n5
the number of elements in the 5th dimension
f
The function computing element values
returns
A collection consisting of elements f(i1, i2, i3, i4, i5) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, 0 <= i4 < n4, and 0 <= i5 < n5.

Definition Classes
GenTraversableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) ⇒ A): Stream[Stream[Stream[Stream[A]]]]

Produces a four-dimensional collection containing values of a given function over ranges of integer values starting from 0.
Produces a four-dimensional collection containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
n4
the number of elements in the 4th dimension
f
The function computing element values
returns
A collection consisting of elements f(i1, i2, i3, i4) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, and 0 <= i4 < n4.

Definition Classes
GenTraversableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) ⇒ A): Stream[Stream[Stream[A]]]

Produces a three-dimensional collection containing values of a given function over ranges of integer values starting from 0.
Produces a three-dimensional collection containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3nd dimension
f
The function computing element values
returns
A collection consisting of elements f(i1, i2, i3) for 0 <= i1 < n1, 0 <= i2 < n2, and 0 <= i3 < n3.

Definition Classes
GenTraversableFactory
def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) ⇒ A): Stream[Stream[A]]

Produces a two-dimensional collection containing values of a given function over ranges of integer values starting from 0.
Produces a two-dimensional collection containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
f
The function computing element values
returns
A collection consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2.

Definition Classes
GenTraversableFactory
def toString(): String

Definition Classes
AnyRef → Any
def unapplySeq[A](x: Stream[A]): Some[Stream[A]]

This method is called in a pattern match { case Seq(...) => }.
This method is called in a pattern match { case Seq(...) => }.
x
the selector value
returns
sequence wrapped in an option, if this is a Seq, otherwise none

Definition Classes
SeqFactory
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
@throws( ... )

Related Docs: class Stream | package immutable

object Stream extends SeqFactory[Stream] with Serializable

Type Members

type Coll = Stream[_]

final class Cons[+A] extends Stream[A]

class ConsWrapper[A] extends AnyRef

class GenericCanBuildFrom[A] extends CanBuildFrom[CC[_], A, CC[A]]

class StreamBuilder[A] extends LazyBuilder[A, Stream[A]]

class StreamCanBuildFrom[A] extends GenericCanBuildFrom[A]

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

object #::

final def ==(arg0: Any): Boolean

object Empty extends Stream[Nothing]

def ReusableCBF: GenericCanBuildFrom[Nothing]

def apply[A](xs: A*): Stream[A]

final def asInstanceOf[T0]: T0

implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, Stream[A]]

def clone(): AnyRef

def concat[A](xss: collection.Traversable[A]*): Stream[A]

object cons

implicit def consWrapper[A](stream: ⇒ Stream[A]): ConsWrapper[A]

def continually[A](elem: ⇒ A): Stream[A]

def empty[A]: Stream[A]

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def fill[A](n: Int)(elem: ⇒ A): Stream[A]

def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: ⇒ A): Stream[Stream[Stream[Stream[Stream[A]]]]]

def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: ⇒ A): Stream[Stream[Stream[Stream[A]]]]

def fill[A](n1: Int, n2: Int, n3: Int)(elem: ⇒ A): Stream[Stream[Stream[A]]]

def fill[A](n1: Int, n2: Int)(elem: ⇒ A): Stream[Stream[A]]

def finalize(): Unit

def from(start: Int): Stream[Int]

def from(start: Int, step: Int): Stream[Int]

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def iterate[A](start: A, len: Int)(f: (A) ⇒ A): Stream[A]

def iterate[A](start: A)(f: (A) ⇒ A): Stream[A]

final def ne(arg0: AnyRef): Boolean

def newBuilder[A]: Builder[A, Stream[A]]

final def notify(): Unit

final def notifyAll(): Unit

def range[T](start: T, end: T, step: T)(implicit arg0: Integral[T]): Stream[T]

def range[T](start: T, end: T)(implicit arg0: Integral[T]): Stream[T]

final def synchronized[T0](arg0: ⇒ T0): T0

def tabulate[A](n: Int)(f: (Int) ⇒ A): Stream[A]

def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) ⇒ A): Stream[Stream[Stream[Stream[Stream[A]]]]]

def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) ⇒ A): Stream[Stream[Stream[Stream[A]]]]

def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) ⇒ A): Stream[Stream[Stream[A]]]

def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) ⇒ A): Stream[Stream[A]]

def toString(): String

def unapplySeq[A](x: Stream[A]): Some[Stream[A]]

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from SeqFactory[Stream]

Inherited from TraversableFactory[Stream]

Inherited from GenericSeqCompanion[Stream]

Inherited from GenSeqFactory[Stream]

Inherited from GenTraversableFactory[Stream]

Inherited from GenericCompanion[Stream]

Inherited from AnyRef

Inherited from Any

Ungrouped