iOS For those that were interested in function programming for Swift:

[Stella]

Yes. This is a very personal preference of mine, I am attracted to Swift as I like its syntax. I do know about coffee script but for now I find that compiling (or transpiling, whichever term you prefer) to JS is too much of a burden for the benefit it brings, i.e.: compared to the C to ASM debate, the benefits of Coffee Script, TypeScript or AtScript are relatively minor, especially with the ES6 addressing most of the major issues. Also, I do not really believe that these languages have bright future with the advent of ES6 (and 7 and so on, I hope that JS will start evolving faster).

I've never seen the attraction of translation languages such as CoffeeScript, TypeScript, Less etc that just translates into native code. For one, it makes debugging harder after translation, and of course issues with translation related bugs.

Certainly, when ES6 becomes mainstream there will be less of a need for CoffeeScript, TypeScript etc.

When it comes to CoffeeScript, I do see an attraction for one use case - that is with Angular2. Angular2 was written with CoffeeScript and recommends CoffeeScript. Writing Angular2 apps with regular Javascript is really quite hideous - CoffeeScript is very welcome Syntactic Sugar! Debugging it made easier with IDEs such as WebStorm.