RunUnaryHandler тип

R RunUnaryHandler(Зона self, ДелегатЗоны parent, Зона zone, R f(T arg), T arg)

Исходный код

typedef R RunUnaryHandler<R, T>(
    Zone self, ZoneDelegate parent, Zone zone, R f(T arg), T arg);

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