Personally I prefer a well known symbol for marking you are grabbing from the end of the list rather than this wrapping behavior like D ( https://dlang.org/spec/arrays.html#array-length ). That said I think `.last` is more reasonable than changing prototypes.
On Fri, Jan 22, 2016 at 1:17 PM, Dmitry Soshnikov < dmitry.soshni...@gmail.com> wrote: > On Fri, Jan 22, 2016 at 9:53 AM, RacerD123 <racerd...@gmail.com> wrote: > >> In other programming languages such as python, you can specify the last >> element of a list with "list[-1]" but in javascript you have to do >> "list[list.length-1]". Is there maybe a way to make this feature in >> javascript? >> >> > This could be a good addition, although `slice` may work as well. This has > been discussed previously as well in the last 4-5 years. In addition with > non-enumerable properties you can just monkey-patch `Array.prototype` with > the `peek` or `last` method. I guess approach when some library forces some > method to widely used, can be a good candidate for adding it to the spec > (this how it was with `Function.prototype.bind`, e.g., although today > monkey-patching is a bad practice of course). > > In addition, you can monkey-patch just `-1`, and other indexes, e.g. a > gist from 5 years old, when a similar topic was proposed here: > https://gist.github.com/DmitrySoshnikov/984921 > > Dmitry > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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