Removes key
and its associated value, if present, from the map.
Returns the value associated with key
before it was removed. Returns null
if key
was not in the map.
Note that values can be null
and a returned null
value doesn't always mean that the key was absent.
V remove(Object key);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-core/Map/remove.html