W3cubDocs

/Dart 2

dart:async

ZoneBinaryCallback<R, T1, T2> typedef

R ZoneBinaryCallback (T1 arg1, T2 arg2)

Implementation

typedef R ZoneBinaryCallback<R, T1, T2>(T1 arg1, T2 arg2);

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https://api.dart.dev/stable/2.5.0/dart-async/ZoneBinaryCallback.html