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Date: Tue, 05 Aug 2008 15:28:32 +0400
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To: Marcus Boerger <helly@php.net>
CC: Moriyoshi Koizumi <moriyoshi@at.wakwak.com>, internals@lists.php.net
References: <909776579.20080803142659@marcus-boerger.de> <4896A7C4.8090503@zend.com> <4110083360.20080804104233@marcus-boerger.de> <4896EA3C.6010203@zend.com> <4897E9B5.9020006@at.wakwak.com> <4897F54F.7080909@zend.com> <96829337.20080805132125@marcus-boerger.de>
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Subject: Re: [PHP-DEV] Inconsistencies in 5.3
From: dmitry@zend.com (Dmitry Stogov)

Of course not, but it will be very hard to understand difference and 
fix parser conflicts.

Thanks. Dmitry.

Marcus Boerger wrote:
> Hello Dmitry,
> 
> Tuesday, August 5, 2008, 8:38:07 AM, you wrote:
> 
>> Allowing "use" inside function body assuming allowing it everywhere.
> 
>> $x = function($arg) {
>>                 if ($arg) {
>>                         use $a;
>>                 } else {
>>                         use $b;
>>                 }
>>         };
> 
>> I don't like such ability and of course we won't be able to use "use" 
>> keyword as it will conflict with import statement.
> 
> So the import statement use can be placed inside the body of a function as
> an expression?
> 
> 
>> Moriyoshi Koizumi wrote:
>>> Dmitry Stogov wrote:
>>>>
>>>> Marcus Boerger wrote:
>>>>> Hello Dmitry,
>>>>>
>>>>> Monday, August 4, 2008, 8:55:00 AM, you wrote:
>>>>>
>>>>>> Hi Marcus,
>>>>>> see below
>>>>>> Marcus Boerger wrote:
>>>>>>> Hello Internals,
>>>>>>>
>>>>>>>   please let's not introduce new inconsistencies. Rather lets make new
>>>>>>> stuff consistent with old stuff during the alpha phase of 5.3.
>>>>>>>
>>>>>>> 1) new keyword 'use'. Semantically it is the same as 'static' or 
>>>>>>> 'global'
>>>>>>> so it should be used in the same location.
>>>>>> For me 'use' is the best keyword as it says that closure uses 
>>>>>> variables from current content. (the same keyword is used for import 
>>>>>> from namespaces)
>>>>> To be clear, I wasn't complaining about the keyword per se. I just 
>>>>> prefer
>>>>> it to be inside the curly braces of a closure next to global rather 
>>>>> than in
>>>>> front of it.
>>>>>
>>>> No. The list of lexical variables is a part of the closure definition.
>>>>
>>>> The earlier implementation had "lexical" keyword which worked as you 
>>>> are suggesting, but it was much unclear.
>>> I don't think there are many differences in ambiguity between
>>>
>>> $closure = function ($arg) { use $a;
>>>   ...
>>> };
>>>
>>> and
>>>
>>> $closure = function ($arg) use ($a) {
>>> };
>>>
>>> Moriyoshi
>>>
> 
> 
> 
> 
> Best regards,
>  Marcus
>