On Mon, Mar 4, 2013 at 10:08 AM, <al...@instantbird.org> wrote: > It would be useful to be able to form the intersection and the union of > two Sets. These are natural operations that are currently not part of > the API > (http://wiki.ecmascript.org/doku.php?id=harmony:simple_maps_and_sets). > > Similar methods would make sense for Map, but one would have to think > about what to do in the case where the key but not the value matches. > > An intersection is equivalent to a particular filter, so an alternative > might be to add a method like Array.filter to Sets instead. > > (I filed bug 847355 for this and was told this mailing list was the > right place for this suggestion.)
Yes please, and also minus (remove from set A all elements it shares with set B). All three of these are fairly vital for a lot of code using sets. ~TJ _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
