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/Dart 2

ControllerCancelCallback typedef

dynamic ControllerCancelCallback ()

Type of stream controller onCancel callbacks.

The callback may return either void or a future.

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