scalatestCoreDottyJS/org.scalatest/org.scalatest.enablers/Collecting

Collecting

org.scalatest.enablers.Collecting

See theCollecting companion object

trait Collecting[E, C]

Supertrait for typeclasses that enable loneElement and inspectors syntax for collections.

A Collecting[E, C] provides access to the "collecting nature" of type C in such a way that loneElement syntax can be used with type C. A C can be any type of "collecting", a type that in some way collects or brings together elements of type E. ScalaTest provides implicit implementations for several types. You can enable the contain matcher syntax on your own type U by defining an Collecting[E, U] for the type and making it available implicitly.

ScalaTest provides implicit Collecting instances for org.scalactic.ColCompatHelper.Iterable, Array, java.util.Collection and java.util.Map in the Collecting companion object.

Attributes

Companion: object
Graph
Supertypes: class Object

trait Matchable

class Any

Members list

Value members

Abstract methods

Returns a Iterable[E] containing the same elements (in the same order, if the original collection had a defined order), as the passed collection .

Value parameters

collection: a collection to check the size of

Attributes

Returns: a Iterable[E] containing the same elements as the passed collection

Implements the loneElement syntax of trait LoneElement.

Returns the lone element contained in a collection, wrapped in a Some, or None if the collection contains either no elements or more than one element.

Value parameters

collection: a collection about which an assertion is being made

Attributes

Returns: Some[E] if the collection contains one and only one element, None otherwise.

Returns the size of the passed collection.

Value parameters

collection: a collection to check the size of

Attributes

Returns: the size of the passed collection

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