that's a really interesting comment. where exactly is the line drawn between "ju...

geon · on Oct 12, 2011

> where exactly is the line

Not that I have an aswer to that, but I have the impression Coffeescript was designed specifically to compile 1:1 to matching js.

A lot of the distinction seems to depend on the local culture of the language. I've seen a lot of lispers talking about their new "language", where they add some minor feature to scheme.

cubicle67 · on Oct 13, 2011

...Coffeescript was designed specifically to compile 1:1 to matching js

possibly initially, but there's a lot of constructs in coffeescript that aren't in js eg existential operator

    solipsism = true if mind? and not world?

compiles to

    var solipsism;
    if ((typeof mind !== "undefined" && mind !== null) && !(typeof world !== "undefined" && world !== null)) {
      solipsism = true;
    }

see also splats http://jashkenas.github.com/coffee-script/#splats, function binding and comprehensions over collections eg

    eat food for food in ['toast', 'cheese', 'wine']