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Date: Wed, 11 Feb 2015 16:50:59 +0900
Message-ID: <CAGa2bXYecWV3_3KW3teY1W0TcuRQ1pzCceDPewhjkxwCiS5Zdg@mail.gmail.com>
To: Dmitry Stogov <dmitry@zend.com>
Cc: Joe Watkins <pthreads@pthreads.org>, Patrick Schaaf <php@bof.de>, 
	internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=001a113a2aa2104768050ecb46f2
Subject: Re: [PHP-DEV] Design by Contract
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

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Content-Type: text/plain; charset=UTF-8

Hi Dmitry,

On Wed, Feb 11, 2015 at 4:26 PM, Dmitry Stogov <dmitry@zend.com> wrote:

> I think we should just repeat the related D semantic.
> It must be defined in contracts inheritance rules.
>
> What if we have contracts for prototype method in parent class and
> interface?
> Should we still validate contracts of parent and interface if we add our
> owns?
> etc.


Both D and Eiffel evaluates all contracts defined in parents/interfaces.

Both D and Eiffel has method like invariant definition. They don't inherit
explicitly, but inherit implicitly always. That's why I sent strange mail.
I read code
and misunderstood by mistake. I don't code with D much, but I really like
the
feature ;)

Regards,

--
Yasuo Ohgaki
yohgaki@ohgaki.net

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