On Jul 2, 2010, at 7:45 PM, Mark S. Miller wrote: > On Fri, Jul 2, 2010 at 4:40 PM, Maciej Stachowiak <m...@apple.com> wrote: > > I agree that "EphemeronTable" is too jargon-ish and may dissuade developers > from using it. I like Map better than Table as a suffix. Ephemeral is an > improvement, but it sounds like the whole map object is ephemeral, rather > than its mappings. Here are some other ideas: > > WeakMap - doesn't specifically false-advertise as a "weak key" map, but gets > the right idea across > CacheMap - a major use case for this is for "caching" extra data about > objects with automatic cleanup > ExtraDataMap - it's a way to store additional data about objects / values (in > a way that is cleaned up automatically) > > I'm happy with all three of these. Interesting point about WeakMap. Not only > does it not false advertise, we can even give a rationale about why it is the > right name: it is not quite the key that is weak, it is more the mapping that > is weak.
Indeed, that's what I had in mind when suggesting it. The mapping is weak. > > > I don't think giving credit to inventors should be a major consideration in > API naming. We can give them credit in the spec. > > I'm not sure if there is currently a plan to add a vanilla Map. Some have > suggested that Object.hash is enough, and JS libraries could build on top of > the primitive. > > Actually, IIRC, that is not anyone's position. Allen was the main advocate > for Object.hash and his point is that developers not be stuck with the > built-in Map implementation. IIRC, he still did think that there should be > some built-in Map implementation even if developers can build alternatives. > Allen? I don't recall precisely enough what anyone's exact position was. I don't recall anyone being firmly opposed to a normal Map, it just didn't seem like a high priority. I agree that the hash code (and corresponding equivalence relation) should be exposed regardless. Regards, Maciej
_______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
