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Scala 3/scala/scala.collection/Seq

Seq

scala.collection.Seq
See theSeq companion trait
object Seq extends Delegate[Seq]

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

Attributes

Companion
trait
Source
Seq.scala
Graph
Supertypes
class Delegate[Seq]
trait SeqFactory[Seq]
trait Pure
trait Serializable
class Object
trait Matchable
class Any
Show all
Self type
Seq.type

Members list

Value members

Inherited methods

override def apply[A](elems: A*): Seq[A]

Creates a sequence with the specified elements.

Creates a sequence with the specified elements.

Type parameters

A

the type of the sequence's elements

Value parameters

elems

the elements of the created sequence

Attributes

Returns

a new sequence with elements elems

Definition Classes
Inherited from:
Delegate
Source
Factory.scala
def concat[A](xss: Iterable[A]*): Seq[A]

Concatenates all argument collections into a single sequence.

Concatenates all argument collections into a single sequence.

Type parameters

A

the element type of the sequence

Value parameters

xss

the collections that are to be concatenated.

Attributes

Returns

the concatenation of all the collections.

Inherited from:
IterableFactory
Source
Factory.scala
def empty[A]: Seq[A]

An empty sequence.

An empty sequence.

Type parameters

A

the type of the sequence's elements

Attributes

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

Produces a five-dimensional sequence containing the results of some element computation a number of times.

Produces a five-dimensional sequence containing the results of some element computation a number of times.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[Seq[Seq[A]]]]

Produces a four-dimensional sequence containing the results of some element computation a number of times.

Produces a four-dimensional sequence containing the results of some element computation a number of times.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[Seq[A]]]

Produces a three-dimensional sequence containing the results of some element computation a number of times.

Produces a three-dimensional sequence containing the results of some element computation a number of times.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[A]]

Produces a two-dimensional sequence containing the results of some element computation a number of times.

Produces a two-dimensional sequence containing the results of some element computation a number of times.

Type parameters

A

the element type of the sequence

Value parameters

elem

the element computation

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Attributes

Returns

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

Inherited from:
IterableFactory
Source
Factory.scala
def fill[A](n: Int)(elem: => A): Seq[A]

Produces a sequence containing the results of some element computation a number of times.

Produces a sequence containing the results of some element computation a number of times.

Type parameters

A

the element type of the sequence

Value parameters

elem

the element computation

n

the number of elements contained in the sequence.

Attributes

Returns

A sequence that contains the results of n evaluations of elem.

Inherited from:
IterableFactory
Source
Factory.scala
def from[E](it: IterableOnce[E]^): Seq[E]

Creates a target sequence from an existing source collection

Creates a target sequence from an existing source collection

Type parameters

A

the type of the collection’s elements

Value parameters

source

Source collection

Attributes

Returns

a new sequence with the elements of source

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

Produces a sequence containing repeated applications of a function to a start value.

Produces a sequence containing repeated applications of a function to a start value.

Type parameters

A

the element type of the sequence

Value parameters

f

the function that's repeatedly applied

len

the number of elements contained in the sequence

start

the start value of the sequence

Attributes

Returns

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

Inherited from:
IterableFactory
Source
Factory.scala
def newBuilder[A]: Builder[A, Seq[A]]

Type parameters

A

the type of the sequence’s elements

Attributes

Returns

a builder for Seq objects.

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

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

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

Type parameters

A

the element type of the sequence, which must have an Integral instance

Value parameters

end

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

start

the start value of the sequence

step

the difference between successive elements of the sequence (must be positive or negative)

Attributes

Returns

a sequence with values start, start + step, ... up to, but excluding end

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

Produces a sequence containing a sequence of increasing of integers.

Produces a sequence containing a sequence of increasing of integers.

Type parameters

A

the element type of the sequence, which must have an Integral instance

Value parameters

end

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

start

the first element of the sequence

Attributes

Returns

a sequence 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): Seq[Seq[Seq[Seq[Seq[A]]]]]

Produces a five-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Produces a five-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[Seq[Seq[A]]]]

Produces a four-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Produces a four-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[Seq[A]]]

Produces a three-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Produces a three-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Type parameters

A

the element type of the sequence

Value parameters

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

Attributes

Returns

A sequence 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): Seq[Seq[A]]

Produces a two-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Produces a two-dimensional sequence containing values of a given function over ranges of integer values starting from 0.

Type parameters

A

the element type of the sequence

Value parameters

f

The function computing element values

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Attributes

Returns

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

Inherited from:
IterableFactory
Source
Factory.scala
def tabulate[A](n: Int)(f: Int => A): Seq[A]

Produces a sequence containing values of a given function over a range of integer values starting from 0.

Produces a sequence containing values of a given function over a range of integer values starting from 0.

Type parameters

A

the element type of the sequence

Value parameters

f

The function computing element values

n

The number of elements in the sequence

Attributes

Returns

A sequence consisting of elements f(0), ..., f(n -1)

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

Attributes

Inherited from:
SeqFactory
Source
Factory.scala
def unfold[A, S](init: S)(f: S => Option[(A, S)]): Seq[A]

Produces a sequence that uses a function f to produce elements of type A and update an internal state of type S.

Produces a sequence that uses a function f to produce elements of type A and update an internal state of type S.

Type parameters

A

Type of the elements

S

Type of the internal state

Value parameters

f

Computes the next element (or returns None to signal the end of the collection)

init

State initial value

Attributes

Returns

a sequence that produces elements using f until f returns None

Inherited from:
IterableFactory
Source
Factory.scala

Implicits

Inherited implicits

implicit def iterableFactory[A]: Factory[A, Seq[A]]

Attributes

Inherited from:
IterableFactory
Source
Factory.scala
Generated with
Copyright (c) 2002-2026, LAMP/EPFL
Copyright (c) 2002-2026, LAMP/EPFL