I think what you're looking for is map + filter - mutating the list mid-iteration is very bad news bears.
In other words, `Array.from(arrayLike, mapFn).filter(removeWhatever)` On Wed, May 3, 2017 at 4:46 AM, T.J. Crowder < [email protected]> wrote: > On Wed, May 3, 2017 at 12:39 PM, the kojoman <[email protected]> wrote: > >> Thanks for the clarification. I thought the mapping was applied >> afterwards. >> >> I would still argue that it would be better to skip it all together than >> having it and not working like the existing map function. >> > So Array.from(array-like).map(mapFn) is the way to go then? >> > > Why make two passes over the contents rather than just one? > > It is interesting that `Array.from` doesn't pass its first parameter > (`items`, the source object) as the third argument to the mapping function. > I suspect it's because the index doesn't necessarily work with the source > object, if an iterator is being used... > > -- T.J. Crowder > > _______________________________________________ > 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
