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Date: Tue, 10 Feb 2015 10:03:19 +0000
Message-ID: <CAL=_i_mFfi08GUHZVSQana976rYUVp9zzefB980jPptsnGqtKA@mail.gmail.com>
To: Dmitry Stogov <dmitry@zend.com>
Cc: Patrick Schaaf <php@bof.de>, internals <internals@lists.php.net>, 
	Yasuo Ohgaki <yohgaki@ohgaki.net>
Content-Type: multipart/alternative; boundary=047d7b86f3560e16bd050eb8ff61
Subject: Re: [PHP-DEV] Design by Contract
From: pthreads@pthreads.org (Joe Watkins)

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Content-Type: text/plain; charset=UTF-8

The solution D uses is allowing the programmer to declare the name of the
return value like, we could do something like:

public function method()
    return ($result) ($result <= 10 && $result >= 0) {
    return 5;
}

If you didn't need the result, were working with a scope variable, or maybe
even a param taken by reference:

public function method()
   return ($expr) {
   /* ... */
}

I'm not keen on __CONSTANTS__, it's long, and if you have the choice to
name the variable you have the option of making the expression ...
expressive ...

Cheers
Joe

On Tue, Feb 10, 2015 at 9:48 AM, Dmitry Stogov <dmitry@zend.com> wrote:

> I think __RETURN__ is better than $ret.
>
> Dmitry.
>
> On Tue, Feb 10, 2015 at 12:43 PM, Patrick Schaaf <php@bof.de> wrote:
>
>> Am 10.02.2015 09:29 schrieb "Dmitry Stogov" <dmitry@zend.com>:
>> >
>> > I cnahged $> into $ret, because $> just won't work. Some better
>> solution is welcome.
>>
>> Also think $> would be awful. Don't like $ret either. What about a magic
>> constant __RETURN__ or __RESULT__? This would stand out very well when
>> glancing at the expression, would fit in with naming of other magic
>> constants, and might even be made to work in finally blocks, where the same
>> need for access to the returned value exists.
>>
>> best regards
>>   Patrick
>>
>
>

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