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/Dart 2

clear method

void clear ()

This operation is not supported by an unmodifiable map.

Implementation

void clear() {
  throw new UnsupportedError("Cannot modify unmodifiable map");
}

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-collection/UnmodifiableMapBase/clear.html