Request for EventBus

[DartBot]

This issue was originally filed by off...@mikemitterer.at

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Please add an EventBus class to dart:core.

I know I can write my own but it would be much nicer to have a standardized inner-app communication mechanism. Dart is in an early stage and specially thats why it is so important to have this fundamental class asap. in the framework.

In the meantime maybe this:
https://github.com/MikeMitterer/DART-EventBus
helps someone.

[kasperl]

Removed Type-Defect label.
Added Type-Enhancement, Area-Library, Triaged labels.

[DartBot]

This comment was originally written by @kaendfinger

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I like the idea of this, but to have a beautiful API, we would need method generics, which would allow some simple (and not mirror-based) Event Bus systems. A friend of mine write EventDispatcher, which is about as close to simple as you can get, and has one-time registering.

https://github.com/samrg472/event_dispatcher.dart

Unifing libraries into a single Event System is a good idea, but the big question is:
Will libraries migrate at this point?