On Mon, Nov 22, 2010 at 8:37 AM, David Herman <dher...@mozilla.com> wrote:
> > for (var i : x) ... // must be new iteration > > for (var i : T : x) ... // iteration again, but parsed how? > > for (var i : T in x) ... // for-in with annotated var > > Bummer! > > I'm beginning to feel more strongly again that overloading for-in, as > opposed to introducing yet another syntactic variant of `for', is the right > way to go. > > <thought experiment> > Imagine we made Harmony backwards-incompatible in the following way: for-in > loops would *only* work on iterable objects, and would dynamically fail on > non-iterable objects. So if you wanted the legacy keys behavior, you would > have to explicitly call a `keys' library function. > </thought experiment> > > If we're gonna go invent new keywords why not use the obvious? iterate (var x in y) ...
_______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
