On Nov 9, 2011, at 1:15 PM, Dean Landolt wrote: > On Wed, Nov 9, 2011 at 4:05 PM, Brendan Eich <[email protected]> wrote: > On Nov 9, 2011, at 12:40 PM, Jorge wrote: > > > On 08/11/2011, at 22:17, John J Barton wrote: > >> Just as a point of comparison, I use this form: > >> Object.keys(o).forEach( function(key) { > >> body > >> }); > > > > By the way, isn't that above a(nother) good use case for a goto, given that > > there's no (easy) way to break out of a forEach 'loop' ? > > "goto" as in C, from body to a label in the outer function or script? > Seriously? > > You could always use try/catch/throw, but who would? > > > Umm, es-next, right? In a way, isn't this what StopIteration is? :)
No, that's almost entirely under the for/of hood. The number of users who have to manually catch in order to write schedulers is miniscule compared to the population who'll write loops, comprehensios, and generator expressions. > Still, it's a whole lot nicer to just let the language do your try/catch > wrapping where you can. Yes. > And if you need to break out of forEach, just, umm, don't use forEach. It's > the wrong tool for the job. Clearly people like the forEach array extra in conjunction with Object.keys. With block-lambdas they could have their cake and break from it too (and the call would be paren-free to boot). /be
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