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Scala 3
3.7.4
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Copyright (c) 2002-2025, LAMP/EPFL
Copyright (c) 2002-2025, LAMP/EPFL
Scala 3/scala/scala.collection/View

View

scala.collection.View
See theView companion trait
objectView extendsIterableFactory[View]

This object reifies operations on views as case classes

Attributes

Companion
trait
Source
View.scala
Graph
Supertypes
Self type
View.type

Members list

Type members

Classlikes

classAppended[+A](underlying:SomeIterableOps[A],elem:A) extendsAbstractView[A]

A view that appends an element to its elements

A view that appends an element to its elements

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classAppended[A]
classAppended[A]
classCollect[+A,B](underlying:SomeIterableOps[A],pf:PartialFunction[A,B]) extendsAbstractView[B]

A view that collects elements of the underlying collection.

A view that collects elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[B]
traitView[B]
traitIterable[B]
traitIterableOps[B,View,View[B]]
traitIterableOnce[B]
classObject
traitMatchable
classAny
Show all
classConcat[A](prefix:SomeIterableOps[A],suffix:SomeIterableOps[A]) extendsAbstractView[A]

A view that concatenates elements of the prefix collection or iterator with the elements of the suffix collection or iterator.

A view that concatenates elements of the prefix collection or iterator with the elements of the suffix collection or iterator.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classConcat[A]
classConcat[A]
classDistinctBy[A,B](underlying:SomeIterableOps[A],f:A=>B) extendsAbstractView[A]

A view that removes the duplicated elements as determined by the transformation functionf

A view that removes the duplicated elements as determined by the transformation functionf

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classDrop[A](underlying:SomeIterableOps[A],n:Int) extendsAbstractView[A]

A view that drops leading elements of the underlying collection.

A view that drops leading elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classDrop[A]
classDrop[A]
classDropRight[A](underlying:SomeIterableOps[A],n:Int) extendsAbstractView[A]

A view that drops trailing elements of the underlying collection.

A view that drops trailing elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classDropRight[A]
classDropRight[A]
classDropWhile[A](underlying:SomeIterableOps[A],p:A=>Boolean) extendsAbstractView[A]

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classElems[A](xs:A*) extendsAbstractView[A]

A view with given elements

A view with given elements

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
caseobjectEmpty extendsAbstractView[Nothing]

The empty view

The empty view

Attributes

Source
View.scala
Supertypes
Self type
Empty.type
classFill[A](n:Int)(elem:=>A) extendsAbstractView[A]

A view containing the results of some element computation a number of times.

A view containing the results of some element computation a number of times.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classFilter[A](valunderlying:SomeIterableOps[A],valp:A=>Boolean,valisFlipped:Boolean) extendsAbstractView[A]

A view that filters an underlying collection.

A view that filters an underlying collection.

Attributes

Companion
object
Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
objectFilter

Attributes

Companion
class
Source
View.scala
Supertypes
classObject
traitMatchable
classAny
Self type
Filter.type
classFlatMap[A,B](underlying:SomeIterableOps[A],f:A=>IterableOnce[B]) extendsAbstractView[B]

A view that flatmaps elements of the underlying collection.

A view that flatmaps elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[B]
traitView[B]
traitIterable[B]
traitIterableOps[B,View,View[B]]
traitIterableOnce[B]
classObject
traitMatchable
classAny
Show all
classIterate[A](start:A,len:Int)(f:A=>A) extendsAbstractView[A]

A view containing repeated applications of a function to a start value

A view containing repeated applications of a function to a start value

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classLeftPartitionMapped[A,A1,A2](underlying:SomeIterableOps[A],f:A=>Either[A1,A2]) extendsAbstractView[A1]

Attributes

Source
View.scala
Supertypes
classAbstractView[A1]
traitView[A1]
traitIterable[A1]
traitIterableOps[A1,View,View[A1]]
traitIterableOnceOps[A1,View,View[A1]]
traitIterableOnce[A1]
classObject
traitMatchable
classAny
Show all
classMap[+A,+B](underlying:SomeIterableOps[A],f:A=>B) extendsAbstractView[B]

A view that maps elements of the underlying collection.

A view that maps elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[B]
traitView[B]
traitIterable[B]
traitIterableOps[B,View,View[B]]
traitIterableOnce[B]
classObject
traitMatchable
classAny
Show all
Known subtypes
classMap[A,B]
classMap[A,B]
classPadTo[A](underlying:SomeIterableOps[A],len:Int,elem:A) extendsAbstractView[A]

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classPrepended[+A](elem:A,underlying:SomeIterableOps[A]) extendsAbstractView[A]

A view that prepends an element to its elements

A view that prepends an element to its elements

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classPrepended[A]
classPrepended[A]
classRightPartitionMapped[A,A1,A2](underlying:SomeIterableOps[A],f:A=>Either[A1,A2]) extendsAbstractView[A2]

Attributes

Source
View.scala
Supertypes
classAbstractView[A2]
traitView[A2]
traitIterable[A2]
traitIterableOps[A2,View,View[A2]]
traitIterableOnceOps[A2,View,View[A2]]
traitIterableOnce[A2]
classObject
traitMatchable
classAny
Show all
classScanLeft[+A,+B](underlying:SomeIterableOps[A],z:B,op: (B,A)=>B) extendsAbstractView[B]

Attributes

Source
View.scala
Supertypes
classAbstractView[B]
traitView[B]
traitIterable[B]
traitIterableOps[B,View,View[B]]
traitIterableOnce[B]
classObject
traitMatchable
classAny
Show all
classSingle[A](a:A) extendsAbstractView[A]

A view with exactly one element

A view with exactly one element

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classTabulate[A](n:Int)(f:Int=>A) extendsAbstractView[A]

A view containing values of a given function over a range of integer values starting from 0.

A view containing values of a given function over a range of integer values starting from 0.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classTake[+A](underlying:SomeIterableOps[A],n:Int) extendsAbstractView[A]

A view that takes leading elements of the underlying collection.

A view that takes leading elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classTake[A]
classTake[A]
classTakeRight[+A](underlying:SomeIterableOps[A],n:Int) extendsAbstractView[A]

A view that takes trailing elements of the underlying collection.

A view that takes trailing elements of the underlying collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
Known subtypes
classTakeRight[A]
classTakeRight[A]
classTakeWhile[A](underlying:SomeIterableOps[A],p:A=>Boolean) extendsAbstractView[A]

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classUnfold[A,S](initial:S)(f:S=>Option[(A,S)]) extendsAbstractView[A]

A view that uses a functionf to produce elements of typeA and update an internal stateS.

A view that uses a functionf to produce elements of typeA and update an internal stateS.

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classUpdated[A](underlying:SomeIterableOps[A],index:Int,elem:A) extendsAbstractView[A]

Attributes

Source
View.scala
Supertypes
classAbstractView[A]
traitView[A]
traitIterable[A]
traitIterableOps[A,View,View[A]]
traitIterableOnce[A]
classObject
traitMatchable
classAny
Show all
classZip[A,B](underlying:SomeIterableOps[A],other:Iterable[B]) extendsAbstractView[(A,B)]

A view that zips elements of the underlying collection with the elements of another collection.

A view that zips elements of the underlying collection with the elements of another collection.

Attributes

Source
View.scala
Supertypes
classAbstractView[(A,B)]
traitView[(A,B)]
classAbstractIterable[(A,B)]
traitIterable[(A,B)]
traitIterableOps[(A,B),View,View[(A,B)]]
traitIterableOnceOps[(A,B),View,View[(A,B)]]
traitIterableOnce[(A,B)]
classObject
traitMatchable
classAny
Show all
classZipAll[A,B](underlying:SomeIterableOps[A],other:Iterable[B],thisElem:A,thatElem:B) extendsAbstractView[(A,B)]

A view that zips elements of the underlying collection with the elements of another collection.

A view that zips elements of the underlying collection with the elements of another collection. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

Attributes

Source
View.scala
Supertypes
classAbstractView[(A,B)]
traitView[(A,B)]
classAbstractIterable[(A,B)]
traitIterable[(A,B)]
traitIterableOps[(A,B),View,View[(A,B)]]
traitIterableOnceOps[(A,B),View,View[(A,B)]]
traitIterableOnce[(A,B)]
classObject
traitMatchable
classAny
Show all
classZipWithIndex[A](underlying:SomeIterableOps[A]) extendsAbstractView[(A,Int)]

Attributes

Source
View.scala
Supertypes
classAbstractView[(A,Int)]
traitView[(A,Int)]
traitIterable[(A,Int)]
traitIterableOps[(A,Int),View,View[(A,Int)]]
traitIterableOnceOps[(A,Int),View,View[(A,Int)]]
traitIterableOnce[(A,Int)]
classObject
traitMatchable
classAny
Show all

Types

typeSomeIterableOps[A] =IterableOps[A,AnyConstr,_]

AnIterableOps whose collection type and collection type constructor are unknown

AnIterableOps whose collection type and collection type constructor are unknown

Attributes

Source
View.scala

Value members

Concrete methods

overridedefapply[A](xs:A*):View[A]

Creates a view with the specified elements.

Creates a view with the specified elements.

Type parameters

A

the type of the view's elements

Value parameters

elems

the elements of the created view

Attributes

Returns

a new view with elementselems

Definition Classes
Source
View.scala
defempty[A]:View[A]

An empty collection

An empty collection

Type parameters

A

the type of the view's elements

Attributes

Source
View.scala
deffrom[E](it:IterableOnce[E]):View[E]

Type parameters

E

View element type

Value parameters

it

TheIterableOnce to view. A properIterable is used directly. If it is really onlyIterableOnce it gets memoized on the first traversal.

Attributes

Returns

A view iterating over the givenIterable

Source
View.scala
deffromIteratorProvider[A](it: ()=>Iterator[A]):View[A]

Type parameters

A

View element type

Value parameters

it

Function creating the iterator to be used by the view. This function must always return a freshIterator, otherwise the resulting view will be effectively iterable only once.

Attributes

Returns

AView[A] whose underlying iterator is provided by theit parameter-less function.

Source
View.scala
defnewBuilder[A]:Builder[A,View[A]]

Type parameters

A

the type of the view’s elements

Attributes

Returns

A builder for View objects.

Source
View.scala

Inherited methods

defconcat[A](xss:Iterable[A]*):View[A]

Concatenates all argument collections into a single collection.

Concatenates all argument collections into a single collection.

Value parameters

xss

the collections that are to be concatenated.

Attributes

Returns

the concatenation of all the collections.

Inherited from:
IterableFactory
Source
Factory.scala
deffill[A](n1:Int,n2:Int,n3:Int,n4:Int,n5:Int)(elem:=>A):View[View[View[View[View[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 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 collection that contains the results ofn1 x n2 x n3 x n4 x n5 evaluations ofelem.

Inherited from:
IterableFactory
Source
Factory.scala
deffill[A](n1:Int,n2:Int,n3:Int,n4:Int)(elem:=>A):View[View[View[View[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 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 collection that contains the results ofn1 x n2 x n3 x n4 evaluations ofelem.

Inherited from:
IterableFactory
Source
Factory.scala
deffill[A](n1:Int,n2:Int,n3:Int)(elem:=>A):View[View[View[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 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 collection that contains the results ofn1 x n2 x n3 evaluations ofelem.

Inherited from:
IterableFactory
Source
Factory.scala
deffill[A](n1:Int,n2:Int)(elem:=>A):View[View[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 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 collection that contains the results ofn1 x n2 evaluations ofelem.

Inherited from:
IterableFactory
Source
Factory.scala
deffill[A](n:Int)(elem:=>A):View[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.

Value parameters

elem

the element computation

n

the number of elements contained in the collection.

Attributes

Returns

A collection that contains the results ofn evaluations ofelem.

Inherited from:
IterableFactory
Source
Factory.scala
defiterate[A](start:A,len:Int)(f:A=>A):View[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 parameters

f

the function that's repeatedly applied

len

the number of elements contained in the collection

start

the start value of the collection

Attributes

Returns

a collection withlen values in the sequencestart, f(start), f(f(start)), ...

Inherited from:
IterableFactory
Source
Factory.scala
defrange[A :Integral](start:A,end:A,step:A):View[A]

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

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

Value parameters

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)

Attributes

Returns

a collection with valuesstart, start + step, ... up to, but excludingend

Inherited from:
IterableFactory
Source
Factory.scala
defrange[A :Integral](start:A,end:A):View[A]

Produces a collection containing a sequence of increasing of integers.

Produces a collection containing a sequence of increasing of integers.

Value parameters

end

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

start

the first element of the collection

Attributes

Returns

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

Inherited from:
IterableFactory
Source
Factory.scala
deftabulate[A](n1:Int,n2:Int,n3:Int,n4:Int,n5:Int)(f: (Int,Int,Int,Int,Int)=>A):View[View[View[View[View[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 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 collection consisting of elementsf(i1, i2, i3, i4, i5) for0 <= i1 < n1,0 <= i2 < n2,0 <= i3 < n3,0 <= i4 < n4, and0 <= i5 < n5.

Inherited from:
IterableFactory
Source
Factory.scala
deftabulate[A](n1:Int,n2:Int,n3:Int,n4:Int)(f: (Int,Int,Int,Int)=>A):View[View[View[View[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 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 collection consisting of elementsf(i1, i2, i3, i4) for0 <= i1 < n1,0 <= i2 < n2,0 <= i3 < n3, and0 <= i4 < n4.

Inherited from:
IterableFactory
Source
Factory.scala
deftabulate[A](n1:Int,n2:Int,n3:Int)(f: (Int,Int,Int)=>A):View[View[View[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 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 collection consisting of elementsf(i1, i2, i3) for0 <= i1 < n1,0 <= i2 < n2, and0 <= i3 < n3.

Inherited from:
IterableFactory
Source
Factory.scala
deftabulate[A](n1:Int,n2:Int)(f: (Int,Int)=>A):View[View[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 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 collection consisting of elementsf(i1, i2) for0 <= i1 < n1 and0 <= i2 < n2.

Inherited from:
IterableFactory
Source
Factory.scala
deftabulate[A](n:Int)(f:Int=>A):View[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.

Value parameters

f

The function computing element values

n

The number of elements in the collection

Attributes

Returns

A collection consisting of elementsf(0), ..., f(n -1)

Inherited from:
IterableFactory
Source
Factory.scala
defunfold[A,S](init:S)(f:S=>Option[(A,S)]):View[A]

Produces a collection that uses a functionf to produce elements of typeA and update an internal state of typeS.

Produces a collection that uses a functionf to produce elements of typeA and update an internal state of typeS.

Type parameters

A

Type of the elements

S

Type of the internal state

Value parameters

f

Computes the next element (or returnsNone to signal the end of the collection)

init

State initial value

Attributes

Returns

a collection that produces elements usingf untilf returnsNone

Inherited from:
IterableFactory
Source
Factory.scala

Implicits

Inherited implicits

implicitdefiterableFactory[A]:Factory[A,View[A]]

Attributes

Inherited from:
IterableFactory
Source
Factory.scala
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Copyright (c) 2002-2025, LAMP/EPFL

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