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Date: Fri, 11 Aug 2017 00:40:08 +0200
Message-ID: <CAH0Uv3HQK5wjcd_-9GynMw34H78ZTv09q9bc=yZ10JBbeT=VOA@mail.gmail.com>
To: Devnuhl Unnamed <devnuhl@gmail.com>
Cc: Sara Golemon <pollita@php.net>, Dan Ackroyd <danack@basereality.com>, reeze@php.net, 
	PHP internals <internals@lists.php.net>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [PHP-DEV] [RFC][DISCUSSION] Allow default value in list() syntax
From: andreas@dqxtech.net (Andreas Hennings)

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.