On Mar 29, 2011, at 7:26 AM, David Herman wrote: > This is what Sam is referring to -- we've been talking about exactly such a > feature.
Sorry if that wasn't clear: at the last face-to-face we talked about allowing you to give your own custom name for the |this|-parameter, so that you could continue to refer to outer-bound |this|. This would use good ol' lexical scope, instead of exotic scope-crawling indices. Dave > I continue to believe that something like the ^this feature we've been > talking about is as likely to introduce bugs as it is to fix bugs. It's like > special language support for off-by-one errors. > > Dave > > PS A propos of nothing, the ^this syntax probably doesn't work because of > ASI; try parsing: > > x = y > ^this.foo() > > On Mar 29, 2011, at 6:47 AM, P T Withington wrote: > >> On 2011-03-29, at 08:52, Sam Tobin-Hochstadt wrote: >> >>> I agree entirely that it goes with the existing fixed implicit |this| >>> binding -- I just think that cuts the other way. The reason we're >>> having this discussion is that the existing behavior of |this| isn't >>> always what you want, and is hard to get around because of its fixed >>> and implicit nature. I think we should alleviate *that* problem, not >>> just the worst symptom. >> >> Way back in >> >> https://mail.mozilla.org/pipermail/es-discuss/2008-August/007273.html >> >> I raised the `this` problem: When you write a function you can choose the >> names of all your parameters (for maximum legibility of your code) except >> the implicit one, where you are forced to accept the name `this`. If you >> could specify a different name, specifying which implicit binding you meant >> in the presence of multiples would be simplified. >> >> I won't propose a syntax for specifying an alternative name for `this`, for >> fear of being taken out to the (bike)shed and getting caned, but I do think >> it worth considering: why must that implicit parameter have a fixed name? >> >> >> _______________________________________________ >> es-discuss mailing list >> es-discuss@mozilla.org >> https://mail.mozilla.org/listinfo/es-discuss > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
