On Feb 12, 2012, at 9:17 PM, Brendan Eich wrote: > Adam Shannon wrote: >> Why not include iterators like zip, zipWith, foldLeft, and the like as well? > > foldLeft is called reduce around these parts ;-). > > We do need a good suite of iterators including zip, etc. Let's have a > proposal here, we can refine it quickly.
True; a small note, Erlang has good standard library for lists including iterators: http://www.erlang.org/doc/man/lists.html, we can consider it and borrow some. Dmitry > Thanks, > > /be > >> >> On Sun, Feb 12, 2012 at 18:52, Peter Michaux<[email protected]> wrote: >>> In the proposal, iterators for Set are listed as todo. If engine >>> implementers have decided to start moving forward implementing Sets, >>> then it would be great if they could get iteration going sooner than >>> later. >>> >>> http://wiki.ecmascript.org/doku.php?id=harmony:simple_maps_and_sets >>> >>> Looking at the Array iterators... >>> >>> It doesn't seem very difficult to specify "forEach" as a proposal >>> sketch. It just has to do the following, doesn't it? >>> >>> var s = new Set(); >>> s.add('alpha'); >>> s.add('beta'); >>> s.forEach(function(element){}); >>> >>> "reduce", "every", and "some" seem similarly easy. "reduceRight" is >>> unnecessary as a set has no order. >>> >>> "filter" and "map" are similarly easy but would return set objects. >>> >>> >>> Peter >>> _______________________________________________ >>> es-discuss mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/es-discuss >> >> >> > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
