Set<E>.identity constructor

Set<E>.identity()

Creates an empty identity Set.

The created Set is a LinkedHashSet that uses identity as equality relation.

The set is equivalent to one created by LinkedHashSet<E>.identity().

Implementation

factory Set.identity() = LinkedHashSet<E>.identity;

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https://api.dart.dev/stable/2.13.0/dart-core/Set/Set.identity.html