Here is my proposal for syntax support for the existing callback+libdispatch patterns: https://gist.github.com/oleganza/7342ed829bddd86f740a#async-semantics htt

Here is my proposal for syntax support for the existing callback+libdispatch patterns: https://gist.github.com/oleganza/7342ed829bddd86f740a#async-semantics https://gist.github.com/oleganza/7342ed829bddd86f740a#async-... The idea is to flatten the syntax without change of the runtime model in the same spirit they did error handling: feels like exceptions, but without ugly stack manipulations.