On Sat, Jan 14, 2012 at 2:05 PM, Brendan Eich <[email protected]> wrote: > This reminds me of dherman's escape continuation proposal: > > http://wiki.ecmascript.org/doku.php?id=strawman:return_to_label > > We did not promote it from Strawman to Harmony status.
It's likely no accident, but the direct Lisp equivalent to this (BLOCK and RETURN-FROM <http://www.lispworks.com/documentation/HyperSpec/Body/s_block.htm>) have proven useful to me many times when I needed to either continue or break from a macro-defined looping construct. I support the author being able to declare their own capacity to escape from block-lambda-driven "loops" using this mechanism. I like it *much* better than attempting to discriminate somehow between lambda-driven "loops" and other lambda-driven constructs, or some lambda-driven constructs invisibly handling break/continue themselves. Plus, it's *very* often useful to escape multiple levels of loops, which is not solved by extending break/continue, but *is* solved by return-to-label. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
