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Date: Fri, 25 Apr 2014 08:52:10 -0600
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To: Lazare Inepologlou <linepogl@gmail.com>
Cc: internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Return Type Declarations
From: morrison.levi@gmail.com (Levi Morrison)

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On Fri, Apr 25, 2014 at 3:09 AM, Lazare Inepologlou <linepogl@gmail.com>wrote:

> Hello,
>
> 2014-04-24 17:59 GMT+02:00 Levi Morrison <levim@php.net>:
>
> My dear Internals friends,
>>
>> I have spent the last month drafting an RFC that allows return types:
>> https://wiki.php.net/rfc/returntypehinting
>>
>> Notable items:
>>   -  Differences from past RFCs are summarized in the RFC:
>> https://wiki.php.net/rfc/returntypehinting#differences_from_past_rfcs
>>   - The patch includes basic opcache and reflection support. It also has
>> phpt tests.
>>   - Informal performance tests indicate that the patch did not fubar
>> performance; if desired a more detailed test can be conducted before
>> voting.
>>   - This RFC does not add, modify, or remove keywords at all; this notably
>> excludes type-hints for scalars. Supporting scalar type declarations is
>> outside the scope of this RFC; if you are interested in supporting scalar
>> type declarations please discuss it elsewhere.
>>
>> As a friendly reminder, everyone on this list is interested in developing
>> a
>> better PHP and the definitions of 'better' vary from person to person.
>> Please be civil and constructive while discussing this RFC. Thank you!
>>
>> Some thanks, regardless if the RFC is accepted:
>>   - For providing a patch: Joe Watkins.
>>   - For helping me iterate on RFC drafts: Bob Wienand, Nikita Popov and
>> Anthony Ferrara
>>   - For previous RFCs on this topic: Felipe Pena and Will Fitch. I gleaned
>> valuable knowledge from your proposals and the discussion around them.
>>
>
>
> This is a nice and well thought proposal.
>
> I would like to suggest the addition of the "self" and "static" pseudo
> types. Most IDEs support this through @return syntax:
>
> class Foo {
>   /** @return static */
>   public function SetBar( $bar ) {
>      // ...
>      return $this;
>   }
> }
>
> With the new syntax, the above could be transformed into this:
>
> class Foo {
>   public function SetBar( $bar ) : static {
>      // ...
>      return $this;
>   }
> }
>

As the patch currently stands you can use the type-hint 'self'.

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