Clearly there is intrest out there for shimming these collection classes in right now. It would seem prudent to hold off until they are part of a finished spec though. Or not? Any advise from committee members regarding optimistic shimming?
khs On Wed, Feb 29, 2012 at 10:26 AM, David Herman <dher...@mozilla.com> wrote: > On Feb 28, 2012, at 4:22 PM, Yehuda Katz wrote: > > However, this means that all downstream users would need to use ['delete'] > something that is sufficiently weird and confusing to new developers that > we always avoid it. > > > Which should be enough reason for us to avoid it in standard libraries as > well. There's really no strong reason for "delete" other than for > consistency with the delete operator and the existing objects-as-tables > usage pattern. But given the costs -- small though they may be in > character-count terms -- any savings in mental cost you get from the > consistency with the unary operator are more than offset by the mental cost > of "whoa, you mean I can't write map.delete because some browsers I'm not > testing with will break?" > > It occurs to me that if Maps are available, so are proxies, but I'm not > sure I want to start using proxies as a blunt force instrument. > > > Well, that's overkill; you can easily create an object that delegates to a > map without reaching for proxies. > > But that's neither here nor there. You're right; there's not enough upside > for `delete` compared to the downside of being fragile across browser > versions and requiring people to pollute their code indefinitely. > > (Note that I *don't* think this is a problem for the `throw` method of > generators, since if you know you have a browser that supports generators, > you know you have a browser that supports IdentifierName keywords.) > > Dave > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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