4 ms·
The "syntax" of promises in JS and Dart isn't really a syntax. They are library features in the form of fluent method chaining. This is merely a library pattern
by nbevans 13y ago
The "syntax" of promises in JS and Dart isn't really a syntax. They are library features in the form of fluent method chaining. This is merely a library pattern, it is not a syntax.
A syntax would be something like the async/await support in C#. Or the async and let!, do! etc along with pipelines in F#.
- k__ 13y agoAre there any compile-to-JavaScript languages out there, which do this? I read about function* and yield, but this seems to require all functions to be rewritten. Also I don't quite understand how this accomplishes to run 2 functions in parallel, if they are async.
- balakk 13y agoHere are a couple : Saltarelle - C# to JS compiler: http://www.saltarelle-compiler.com/documentation/supported-c-language-features http://www.saltarelle-compiler.com/documentation/supported-c... Funscript: http://funscript.info/samples/simpleasync/index.html http://funscript.info/samples/simpleasync/index.html
- k__ 13y agoThank you! Are there any non-ms solutions?
- balakk 13y agoFunscript is not really MS - it's done by a third-party developer, and F# itself is open-sourced under a very liberal license, and runs well on Xamarin/Mono in OS X. I don't think there are direct equivalents in other languages, although similar approaches exist. Checkout Elm for example: http://elm-lang.org/Examples.elm http://elm-lang.org/Examples.elm
- Lazare 13y agoA valid point; that just seemed like the easiest way of phrasing it to me. Anyhow, what I was trying to say is that the linked article trashes Promises, and Dart has Promises, so Dart is at least in that respect not a solution.
- k__ 13y agoAnd this aspect is one of the biggest problems I got with JavaScript. The only big things, which Dart seems to solve, is modularization and the many tiny JavaScript quirks, for which IDEs or a strong understanding of the language is needed.