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To: "Anthony Ferrara" <ircmaxell@gmail.com>, "Stas Malyshev"
 <smalyshev@sugarcrm.com>
Cc: Laruence <laruence@php.net>, "internals@lists.php.net"
 <internals@lists.php.net>
References: <CAAyV7nGo4+n_4Ad7oKyuvLWTtmnui7fn6s-noCwG2PtT5A70tQ@mail.gmail.com> <CABBJUpder_RqKUh7Z4X4uEWWSHikOrM+VZSQfAf1XXW7ec9SPQ@mail.gmail.com> <CAAyV7nHLWV-0PmrAU0XiiUr2JfN=QBMx1n1mAncyWi0yVmk4pw@mail.gmail.com> <51CA16C2.2000100@sugarcrm.com> <CAAyV7nEWsgs6ucJi+1JHLRqvziVpSJVQLtv3YbcATY_TXS85+w@mail.gmail.com> <51CA206A.9050002@sugarcrm.com>
Date: Wed, 26 Jun 2013 13:51:13 +0400
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Subject: Re: [PHP-DEV] RFC: Protocol Type Hinting
From: inefedor@gmail.com ("Nikita Nefedov")

Hi,

On Wed, 26 Jun 2013 02:57:46 +0400, Stas Malyshev <smalyshev@sugarcrm.com>  
wrote:

> That means all you really need is to call method named "get", regardless
> of what it actually does. Usually the code doesn't work this way - you
> expect something to actually happen if you call get(), something
> specific. Interface ensures whoever wrote that object acknowledged that
> this is what he wants too.

But you (as a library dev) still have interfaces. You still use them.

This discussion got really big in a short period of time, but we all know  
all this change does is gives us an ability to not write additional code.  
Some people already stated it - you just won't need to create adapters and  
it's cool.
There's a lot of cases where you need to wire to different libraries and  
for that matter you create THIRD library and call it something like  
%lib1-name%%lib2-name%Adapter where you, in the best case, should create  
classes that inherit from some lib1's or lib2's classes (and just add  
"implements Lib2Interface"), or if there's some static methods - you are  
forced to create decorator which implements needed interfaces - and that  
is what will give a far more overhead than some runtime engine-level  
checks.

What about static analysis, it just lays on YOUR shoulders, if you so want  
static analysis to work properly you just write code which implements  
interfaces. But if it's fine for you, then it's fine, it's easy.

PS sorry for caps in some places