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Date: Tue, 31 Jan 2017 19:41:27 +0100
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Subject: Re: [PHP-DEV] [RFC][Discuss] Arrow Functions
From: cmbecker69@gmx.de ("Christoph M. Becker")

On 31.01.2017 at 19:16, Michael Morris wrote:

> On Tue, Jan 31, 2017 at 12:29 PM, Larry Garfield <larry@garfieldtech.com>
> wrote:
> 
>> My question is why there's no mention of HHVM short closures, or the
>> previous RFC to take that approach.  See:
>>
>> https://docs.hhvm.com/hack/lambdas/introduction
> 
> For what it's worth I'd rather look at
> 
> array_map( $x ==> $x + 1);
> 
> than
> 
> array_map( fn($x) => $x + 1 )
> 
> Not to mention the former isn't a bc break.

Neither is supposed to work, though. :)

Anyhow, I'm not sure whether I'd prefer

  array_map($a, $b, $c ==> $a + $b + $c, $a1, $a2, $a3)

over

  array_map(fn($a, $b, $c) => $a + $b + $c, $a1, $a2, $a3)

or maybe

  array_map(fn $a, $b, $c => $a + $b + $c, $a1, $a2, $a3)

Somehow, I tend to like a trailing keyword for better left-to-right
readability.

-- 
Christoph M. Becker