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Date: Wed, 11 Feb 2015 11:02:13 +0400
Message-ID: <CA+9eiLuaYNoiyX_N0LxWGp88W-F_iOWNcqJcJ6OMaNn_3s-ifw@mail.gmail.com>
To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: Joe Watkins <pthreads@pthreads.org>, Patrick Schaaf <php@bof.de>, 
	internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=bcaec52d53ab42a722050eca9504
Subject: Re: [PHP-DEV] Design by Contract
From: dmitry@zend.com (Dmitry Stogov)

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Content-Type: text/plain; charset=UTF-8

I think we can't support contracts on interfaces and abstract methods.
How D works?

Thanks. Dmitry.

On Wed, Feb 11, 2015 at 1:56 AM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:

> Hi Dmitry and Joe,
>
> On Wed, Feb 11, 2015 at 6:29 AM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:
>
>> On Tue, Feb 10, 2015 at 8:53 PM, Dmitry Stogov <dmitry@zend.com> wrote:
>>
>>> You are welcome to edit https://wiki.php.net/rfc/dbc2
>>> It looks like we have similar views, so just make it better in a way you
>>> think.
>>>
>>
>> Looks good to me. It's much better than original. Thank you folks.
>> We have related issue like how internal module incorporate with DbC.
>> However
>> these could be future issues.
>>
>
> A little more clarification,  following interface definition is allowed or
> not?
>
> interface Some {
>
>   require($this->last_result > 1000); // Force classes to have
> $this->result
>
>   function bar($a, $b)
>      require($a > $b)
>      return($ret, $ret > 1000);
>
>   function getLastResult()
>      return($ret, $this->last_result === $ret);
>
> }
>
> I suppose it is supported, but it may be better to be explicit.
>
> Regards,
>
> --
> Yasuo Ohgaki
> yohgaki@ohgaki.net
>

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