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Date: Thu, 1 Oct 2015 11:48:52 +0100
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Subject: Re: [PHP-DEV] Arrow function expressions in PHP
From: rowan.collins@gmail.com (Rowan Collins)

Levi Morrison wrote on 01/10/2015 04:06:
> I'm going to ask everyone to stop saying that auto-closing is bad
> unless they also provide a demonstration of why it was bad.

Please see my e-mail from last night, or Rasmus's in the original 
thread. It is "bad" (or, controversial) because it is a fundamental 
change to PHP's scoping rules, which currently treat all variables 
denoted by "$foo" as local to the current function, without exception.

> I'm also going to ask everyone to stop suggesting new syntax for
> importing variables. If use() is a pain then auto-importing the used
> variables is a good solution. If it's not a pain why are you
> suggesting new syntax?

Because the feature is being described as "short closures", or as a new 
syntax, so people are looking for ways to make closures shorter without 
changing the functionality.

If auto-capture is the main feature you are interested in, and syntax 
just a by-product, then it might be sensible to make that clear. As a 
straw man, it would be possible to have auto-capture closures with no 
new syntax at all, e.g. function($x) use(*) { return $x * $y; }

It's perfectly reasonable to want both a shorter syntax and a different 
capture behaviour; but it also seems perfectly reasonable to want a 
shorter syntax with the same functionality as the current one, just as 
we have with [] vs array().

Regards,
-- 
Rowan Collins
[IMSoP]