Scala 3/scala/scala.collection/scala.collection.generic/IsIterableOnce

IsIterableOnce

scala.collection.generic.IsIterableOnce

See theIsIterableOnce companion object

Type class witnessing that a collection representation type Repr has elements of type A and has a conversion to IterableOnce[A].

This type enables simple enrichment of IterableOnces with extension methods which can make full use of the mechanics of the Scala collections framework in their implementation.

Example usage,

class FilterMapImpl[Repr, I  Option[B])(implicit bf: BuildFrom[Repr, B, That]): That = {
    val b = bf.newBuilder(coll)
    for(e  if(i % 2 == 0) Some(i) else None)
// == List(2, 4)

Attributes

Companion: object
Source: IsIterableOnce.scala
Graph
Supertypes: class Object

trait Matchable

class Any
Known subtypes: trait IsIterable[Repr]

trait IsMap[Repr]

trait IsSeq[Repr]

Members list

Type members

Types

The type of elements we can traverse over (e.g.

The type of elements we can traverse over (e.g. Int).

Attributes

Source: IsIterableOnce.scala

Value members

Abstract methods

A conversion from the representation type Repr to a IterableOnce[A].

Attributes

Source: IsIterableOnce.scala

Deprecated fields

Attributes

Deprecated: [Since version 2.13.0] \'conversion\' is now a method named \'apply\'
Source: IsIterableOnce.scala

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