Re: Draft RFC: foreach iteration of keys without values

> On Sep 2, 2020, at 6:27 AM, Dik Takken <dik.takken@gmail.com> wrote: > > On 02-09-2020 12:48, Olle Härstedt wrote: >> An alternative syntax would be >> >> foreach($iterable as $key => _) { ... } >> >> Using underscore as a way to signal "I don't care about this value". >> Same could be possible with list destructoring, like >> >> [_, _, $something] = foo(); >> Swift also uses the underscore in places. >> 1. It is currently a valid constant name (BC break) I can name a constant an underscore?? Does anyone actually do this?? I guess I’m asking how impactful the break would be considering most magic things start with double underscore and I haven’t seen many people using the single underscore to represent instance variables anymore.