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/Dart 2

putIfAbsent method

dynamic putIfAbsent (String key, dynamic ifAbsent())

Implementation

dynamic putIfAbsent(String key, dynamic ifAbsent()) {
  throw new UnsupportedError("Not supported");
}

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