domenic at domenicdenicola.com (2013-09-25T02:36:40.247Z)
On Mon, Sep 16, 2013 at 2:59 PM, Rick Waldron <waldron.rick at gmail.com>wrote: > ```js > set.values(); // An array of the set's values > ``` Whoops, that's totally wrong information. (that's what I get for rushing blindly into a thread!) Apologies.
On Mon, Sep 16, 2013 at 2:59 PM, Rick Waldron <waldron.rick at gmail.com>wrote: > > > > On Mon, Sep 16, 2013 at 11:33 AM, Angus Croll <anguscroll at gmail.com>wrote: > >> I'm trying to figure out the most painless way, given a set, to return >> the set's values as an array. >> > > > set.values(); // An array of the set's values > Whoops, that's totally wrong information. (that's what I get for rushing blindly into a thread!) Apologies. Rick > > > >> >> Possibilities: >> 1) harmony wiki ( >> http://wiki.ecmascript.org/doku.php?id=harmony:iterators&s=iterator) >> suggests the following, but it is a syntax error in traceur, continuum and >> "node --harmony" >> > >> let arr = [e for e of mySet]; >> > > Just a heads up, that wiki page is out of date (see the notice at the top > of the page) and shows the old syntax (as shown above). The up-to-date > syntax is: > > let arr = [for (e of mySet) e]; > > (I realize this is beside the point of the question) > > Rick > > > >> >> 2)The ES6 standard supports the following production (i.e. expression, >> not var, before 'for'): >> *IterationStatement : for ( LeftHandSideExpression of >> AssignmentExpression ) Statement* >> (see http://people.mozilla.org/~jorendorff/es6-draft.html#sec-13.6.4.2) >> >> which suggests I should be able to do this: >> let arr = []; >> for (arr[arr.length-1] of mySet); >> >> (I can do the equivalent with for-in) but that also errors in the above >> three transpilers >> >> 3) So then I'm left with the pedestrian: >> let arr = []; >> for (e of mySet) { >> arr.push(e); >> } >> >> 4) I also wondered if Array.from(mySet) would do the trick but again >> doesn't seem to pass muster with any of the above transpilers. (continuum >> returns a zero length array and the other two don't know Array.from) >> >> Wondering if I'm missing something better. >> thanks >> >> Angus >> @angustweets >> >> _______________________________________________ >> es-discuss mailing list >> es-discuss at mozilla.org >> https://mail.mozilla.org/listinfo/es-discuss >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20130916/572b42f9/attachment.html>