There's nothing in the proposal yet because I intentionally kept it small. It's always possible to add functionality, but we need some evidence that it will be widely used. Pointing at Twitter doesn't quite help - it's possible that the number that Twitter shows reflects some limitation in their back-end systems.
Thanks for bringing the issue to this list, btw - tweets aren't as effective in getting TC 39 attention. Norbert On Nov 30, 2012, at 13:06 , Phillips, Addison wrote: > One question would be what you’d want that specific number for? The number of > code points in a string is only marginally interesting in a script. It > doesn’t, for example, tell you how many screen positions the text consumes > (that’s the grapheme count). > > Norbert’s proposal [1] includes an iterator over the code points (so counting > the code points is straightforward, but not a property of the string itself, > or at least I don’t see it anywhere). > > Addison > > [1] > http://norbertlindenberg.com/2012/05/ecmascript-supplementary-characters/index.html > > From: Andrea Giammarchi [mailto:[email protected]] > Sent: Friday, November 30, 2012 12:39 PM > To: Mathias Bynens > Cc: es-discuss > Subject: Re: How to count the number of symbols in a string? > > already raised a while ago ... > > https://jp.twitter.com/WebReflection/status/260479508912685056 > > no answer, if I remember correctly Brendan said that .size() or .size is not > a good name but I have suggested .points too and nobody came back on this > > > On Fri, Nov 30, 2012 at 12:33 PM, Mathias Bynens <[email protected]> wrote: > ECMAScript 6 introduces some useful new features that make working with > astral Unicode symbols easier. > > One thing that is still missing though (AFAIK) is an easy way to count the > number of symbols / code points in a given string. As you know, we can’t rely > on `String.prototype.length` here, as a string containing nothing but an > astral symbol has a length of `2` instead of `1`: > > > var poo = '\u{1F4A9}'; // U+1F4A9 PILE OF POO > > poo.length > 2 > > Of course it’s possible to write some code yourself to loop over all the code > units in the string, handle surrogate pairs, and increment a counter manually > for each full code point, but that’s a pain. > > It would be useful to have a new property on `String.prototype` that would > return the number of Unicode symbols in the string. Something like > `realLength` (of course, it needs a better name, but you get the idea): > > > poo.realLength > 1 > > Another possible solution is to add something like > `String.prototype.codePoints` which would be an array of the numerical code > point values in the string. That way, getting the length is only a matter of > accessing the `length` property of the array: > > > poo.codePoints > [ 0x1F4A9 ] > > poo.codePoints.length > 1 > > Or perhaps this would be better suited as a method? > > > poo.getCodePoints() > [ 0x1F4A9 ] > > poo.getCodePoints().length > 1 > > Has anything like this been considered/discussed here yet? > _______________________________________________ > 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
