Scala 3/scala.collection.immutable/LazyList

LazyList

@SerialVersionUID(3L) object LazyList extends SeqFactory[[A] =>> LazyList[A]]

This object provides a set of operations to create LazyList values.

Companion
class
Source
LazyList.scala
trait SeqFactory[[A] =>> LazyList[A]]
trait IterableFactory[[A] =>> LazyList[A]]
class Object
trait Matchable
class Any

Type members

Classlikes

object #::
final class Deferrer[A] extends AnyVal
final class SerializationProxy[A](var coll: LazyList[A]) extends Serializable

This serialization proxy is used for LazyLists which start with a sequence of evaluated cons cells.

This serialization proxy is used for LazyLists which start with a sequence of evaluated cons cells. The forced sequence is serialized in a compact, sequential format, followed by the unevaluated tail, which uses standard Java serialization to store the complete structure of unevaluated thunks. This allows the serialization of long evaluated lazy lists without exhausting the stack through recursive serialization of cons cells.

Source
LazyList.scala
object cons

An alternative way of building and matching lazy lists using LazyList.cons(hd, tl).

An alternative way of building and matching lazy lists using LazyList.cons(hd, tl).

Source
LazyList.scala

Value members

Concrete methods

override def concat[A](xss: Iterable[A]*): LazyList[A]
Definition Classes
Source
LazyList.scala
def continually[A](elem: => A): LazyList[A]

Create an infinite LazyList containing the given element expression (which is computed for each occurrence).

Create an infinite LazyList containing the given element expression (which is computed for each occurrence).

Value Params
elem

the element composing the resulting LazyList

Returns

the LazyList containing an infinite number of elem

Source
LazyList.scala
def empty[A]: LazyList[A]
override def fill[A](n: Int)(elem: => A): LazyList[A]
Definition Classes
Source
LazyList.scala
def from[A](coll: IterableOnce[A]): LazyList[A]
def from(start: Int, step: Int): LazyList[Int]

Create an infinite LazyList starting at start and incrementing by step step.

Create an infinite LazyList starting at start and incrementing by step step.

Value Params
start

the start value of the LazyList

step

the increment value of the LazyList

Returns

the LazyList starting at value start.

Source
LazyList.scala
def from(start: Int): LazyList[Int]

Create an infinite LazyList starting at start and incrementing by 1.

Create an infinite LazyList starting at start and incrementing by 1.

Value Params
start

the start value of the LazyList

Returns

the LazyList starting at value start.

Source
LazyList.scala
def iterate[A](start: => A)(f: A => A): LazyList[A]

An infinite LazyList that repeatedly applies a given function to a start value.

An infinite LazyList that repeatedly applies a given function to a start value.

Value Params
f

the function that's repeatedly applied

start

the start value of the LazyList

Returns

the LazyList returning the infinite sequence of values start, f(start), f(f(start)), ...

Source
LazyList.scala
def newBuilder[A]: Builder[A, LazyList[A]]

The builder returned by this method only evaluates elements of collections added to it as needed.

The builder returned by this method only evaluates elements of collections added to it as needed.

Type Params
A

the type of the lazy list’s elements

Returns

A builder for LazyList objects.

Source
LazyList.scala
override def tabulate[A](n: Int)(f: Int => A): LazyList[A]
Definition Classes
Source
LazyList.scala
override def unfold[A, S](init: S)(f: S => Option[(A, S)]): LazyList[A]
Definition Classes
Source
LazyList.scala

Inherited methods

def apply[A](elems: A*): LazyList[A]

Creates a collection with the specified elements.

Creates a collection with the specified elements.

Type Params
A

the type of the collection's elements

Value Params
elems

the elements of the created collection

Returns

a new collection with elements elems

Inherited from
IterableFactory
Source
Factory.scala
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => A): LazyList[LazyList[LazyList[LazyList[LazyList[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.

Value Params
elem

the element computation

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 3rd dimension

n4

the number of elements in the 4th dimension

n5

the number of elements in the 5th dimension

Returns

A collection that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem.

Inherited from
IterableFactory
Source
Factory.scala
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => A): LazyList[LazyList[LazyList[LazyList[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.

Value Params
elem

the element computation

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 3rd dimension

n4

the number of elements in the 4th dimension

Returns

A collection that contains the results of n1 x n2 x n3 x n4 evaluations of elem.

Inherited from
IterableFactory
Source
Factory.scala
def fill[A](n1: Int, n2: Int, n3: Int)(elem: => A): LazyList[LazyList[LazyList[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.

Value Params
elem

the element computation

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 3rd dimension

Returns

A collection that contains the results of n1 x n2 x n3 evaluations of elem.

Inherited from
IterableFactory
Source
Factory.scala
def fill[A](n1: Int, n2: Int)(elem: => A): LazyList[LazyList[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.

Value Params
elem

the element computation

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Returns

A collection that contains the results of n1 x n2 evaluations of elem.

Inherited from
IterableFactory
Source
Factory.scala
def iterate[A](start: A, len: Int)(f: A => A): LazyList[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.

Value Params
f

the function that's repeatedly applied

len

the number of elements contained in the collection

start

the start value of the collection

Returns

a collection with len values in the sequence start, f(start), f(f(start)), ...

Inherited from
IterableFactory
Source
Factory.scala
def range[A : Integral](start: A, end: A, step: A): LazyList[A]

Produces a collection containing equally spaced values in some integer interval.

Produces a collection containing equally spaced values in some integer interval.

Value Params
end

the end value of the collection (the first value NOT contained)

start

the start value of the collection

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

Inherited from
IterableFactory
Source
Factory.scala
def range[A : Integral](start: A, end: A): LazyList[A]

Produces a collection containing a sequence of increasing of integers.

Produces a collection containing a sequence of increasing of integers.

Value Params
end

the end value of the collection (the first value NOT contained)

start

the first element of the collection

Returns

a collection with values start, start + 1, ..., end - 1

Inherited from
IterableFactory
Source
Factory.scala
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => A): LazyList[LazyList[LazyList[LazyList[LazyList[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.

Value Params
f

The function computing element values

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 3rd dimension

n4

the number of elements in the 4th dimension

n5

the number of elements in the 5th dimension

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.

Inherited from
IterableFactory
Source
Factory.scala
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => A): LazyList[LazyList[LazyList[LazyList[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.

Value Params
f

The function computing element values

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 3rd dimension

n4

the number of elements in the 4th dimension

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.

Inherited from
IterableFactory
Source
Factory.scala
def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => A): LazyList[LazyList[LazyList[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.

Value Params
f

The function computing element values

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 3rd dimension

Returns

A collection consisting of elements f(i1, i2, i3) for 0 <= i1 < n1, 0 <= i2 < n2, and 0 <= i3 < n3.

Inherited from
IterableFactory
Source
Factory.scala
def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) => A): LazyList[LazyList[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.

Value Params
f

The function computing element values

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Returns

A collection consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2.

Inherited from
IterableFactory
Source
Factory.scala
final def unapplySeq[A](x: LazyList[A]): UnapplySeqWrapper[A]
Inherited from
SeqFactory
Source
Factory.scala

Implicits

Implicits

implicit def toDeferrer[A](l: => LazyList[A]): Deferrer[A]

Inherited implicits

implicit def iterableFactory[A]: Factory[A, LazyList[A]]
Inherited from
IterableFactory
Source
Factory.scala