I vote for no. There is no performance gain and I can hardly see anyone using it. Em seg, 10 de ago de 2015 às 22:18, Isiah Meadows <[email protected]> escreveu:
> That's not really the point. > > The suggestion is this instead: > > ```js > if (s[0] === '/') s = s.slice(1); > if (s[0] === '/') s .= slice(1); > ``` > > This already exists in CoffeeScript and most derivatives/dialects. > > ```coffee > s .= slice 1 if s[0] is '/' > ``` > > Don't know of any other languages that have an equivalent, though. > > On Mon, Aug 10, 2015, 19:31 Jordan Harband <[email protected]> wrote: > >> For that, you'd do `if (s.charAt(0) === '/') { s = s.slice(1); }` - which >> is only slightly more verbose than your example, without the burden of new >> syntax. >> >> On Mon, Aug 10, 2015 at 1:57 PM, Soni L. <[email protected]> wrote: >> >>> Welp I keep replying this wrong (how should I configure my email client?) >>> ------------------------------------------------------------------------- >>> >>> It /could/ in theory be used like this: >>> >>> function path(s) { >>> if (s.charAt(0) == '/') { s.=substring(1); } >>> // your stuff here >>> } >>> >>> >>> On 10/08/15 04:50 PM, Andrea Giammarchi wrote: >>> >>> not only it's badly readable and reminds me the PHP string >>> concatenation, >>> but it promotes different type assignment which is a performance, and >>> virtually strongly typed, anti-pattern. >>> >>> I think Brendan said already it all, the proposal is badly described, >>> and it solve pretty much nothing in the real world. >>> >>> Probably we can just move on and ignore the list of -1 we'll all put in? >>> ;-) >>> >>> Best Regards >>> >>> On Mon, Aug 10, 2015 at 8:46 PM, <[email protected]> wrote: >>> >>>> Please no, while i can see how logically it's derived from a = a + 1 >>>> >>>> a = a.f() >>>> >>>> a .= f() >>>> >>>> seems like a bad idea >>>> >>>> i can hardly see the dot >>>> why would i replace the object from which i'm calling the method in >>>> most cases looks inefficient >>>> >>>> >>>> On Mon, Aug 10, 2015 at 2:07 PM, Brendan Eich < <[email protected]> >>>> [email protected]> wrote: >>>> >>>>> Do not send "Please add" messages with two-line, half-baked sketches >>>>> of extensions to the language. That's just injecting noise with very >>>>> little >>>>> signal. >>>>> >>>>> The "-1" you received will be the answer if pressed from everyone on >>>>> TC39, I would bet real money. Syntax is expensive, adding it for little >>>>> semantic gain and some downside user-confusion risk (plus a small >>>>> complexity tax hike for the language in full) is never the right answer. >>>>> >>>>> That you can scratch this itch (and many others like it) via sweet.js >>>>> does not argue for incorporating any such =. or .= operator into the core >>>>> language. Analyze developer patterns and nearby languages for better >>>>> candidate extensions that solve more serious usability or greater issues. >>>>> >>>>> /be >>>>> >>>>> >>>>> Florent FAYOLLE wrote: >>>>> >>>>>> Hello, >>>>>> >>>>>>> x .= f() should be syntax sugar for x = x.f() >>>>>>> >>>>>>> x .= f().g().h() should be x = x.f().g().h() >>>>>>> >>>>>> >>>>>> +1! I've made some weeks ago a prototype of this in sweet.js: >>>>>> https://github.com/fflorent/member-access-assignment >>>>>> >>>>>> Except that the syntax is rather =. (I have probably been influenced >>>>>> by the CoffeeScript's existential operator). The reverse looks fine to me >>>>>> too. >>>>>> >>>>>> -1 Please no :) >>>>>>> >>>>>> Why? >>>>>> >>>>>> Florent >>>>>> _______________________________________________ >>>>>> 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 >>>> >>>> >>> >>> >>> _______________________________________________ >>> es-discuss mailing >>> [email protected]https://mail.mozilla.org/listinfo/es-discuss >>> >>> >>> -- >>> Disclaimer: these emails are public and can be accessed from <TODO: get a >>> non-DHCP IP and put it here>. If you do not agree with this, DO NOT REPLY. >>> >>> >>> _______________________________________________ >>> 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 > -- Iago Sousa
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