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Date: Wed, 24 Sep 2014 22:35:46 +0100
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Subject: Re: [PHP-DEV] Little switch improvement: get the used variable
From: rowan.collins@gmail.com (Rowan Collins)

On 24/09/2014 22:33, Andrea Faulds wrote:
> On 24 Sep 2014, at 22:17, Rowan Collins <rowan.collins@gmail.com> wrote:
>
>> Perhaps rather than a magic function or constant, though, the switch statement could be extended with an "as" argument, which would store the evaluated expression into a normal variable, allowing nesting, and easier optimisation of the engine where the feature isn't used. Thus you could write this:
>>
>> switch( some_expression() as $switch_value ){
>>   case 1:
>>     do_something();
>>   break;
>>   //...
>>   default:
>>     throw new Exception('Undefined input: ' . $switch_value);
>>     break;
>> }
> Incredibly, some brave soul has gone back in time and already implemented this, when none of us was looking!
>
>      switch($switch_value = some_expression()) {
>          ...
>      }
>

Heh, now I feel like a fool for not thinking of that.

Treating assigments as expressions just isn't something that jumps to 
mind, I guess!

-- 
Rowan Collins
[IMSoP]