Creates an identity map with the default implementation, LinkedHashMap.
The returned map allows null
as a key. It iterates in key insertion order.
factory Map.identity() = LinkedHashMap<K, V>.identity;
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/Map/Map.identity.html