Re: [RFC][DISCUSSION] Allow default value in list() syntax

When you understand something, it often can be hard to understand why others wouldn't. I don't see why people struggle with it either, but I do see it happen quite a lot. I would still think that if you are going to deconstruct something in a structured way, you should validate your data is correct beforehand. And that would be the more ideal solution here. But if replies to a genuine concern over things I've witnessed is going to be met with a dismissive attitude, I'm just going to bow out entirely. Chris On Aug 10, 2017 5:40 PM, "Andreas Hennings" <andreas@dqxtech.net> wrote: > On Fri, Aug 11, 2017 at 12:01 AM, Devnuhl Unnamed <devnuhl@gmail.com> > wrote: > > Would isset($suffix) not suffice here? > > You mean like so? > > list($prefix, $suffix) = explode(':', 'string_without_suffix'); > if (!isset($suffix)) { > .. > } > > The isset() is too late here, because the list() will already cause an > error. > > > > Other concerns fall around list() already being a difficult thing for > people to understand > > I fail to understand what is difficult about it.. > And "destructuring" is a common concept in programming languages. > https://www.startpage.com/do/search?query=destructuring& > cat=web&pl=chrome&language=english > > https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Operators/ > Destructuring_assignment > > The following already works in Javascript: > [a, b, c, d = 'else'] = ['aa', 'bb', 'cc']; > I just tried it in my Chromium console. >