containsValue method

bool containsValue(Object value)

Returns true if this map contains the given value.

Returns true if any of the values in the map are equal to value according to the == operator.

Source

bool containsValue(Object value) => _map.containsValue(value);

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-collection/MapView/containsValue.html