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Subject: Re: [PHP-DEV] [VOTE] Interface Default Methods
From: andreas@heigl.org (Andreas Heigl)

Am 03.07.23 um 02:11 schrieb Levi Morrison:
> Chatter on the [Interface Default Methods RFC][1] has been quiet for
> the past 6 days, and the feature freeze deadline is fast approaching
> for PHP 8.3, so I'm moving this to vote. It'll be open for two weeks
> as usual.
> 
> Thanks to everyone who discussed weaknesses in the RFC during the
> discussion phase.
> 
>    [1]: https://wiki.php.net/rfc/interface-default-methods
> 
I've voted "no" on this RFC for one simple reason:

For me an interface is about the abstraction of a contract. It defines 
how different parts of code interact with one another without having to 
know about the implementation.

With this RFC we are adding implementation details to the abstraction.

That requires knowledge about the implementation of different parts of 
the code. Which we do not have when defining an interface.

If we have this knowledge then we are not defining an interface but an 
implementation were some implementation details need to be overwritten 
depending on business-logic. That is what an abstract class is there for.

And TBH: I do not really care whether there are other languages that 
think that is a good idea: For me it is not.

If one needs default implementations of an interface: Use Traits. But 
leave the contract abstract. ANd if you need to declare some methods to 
be implemented while others are fixed: Use abstract classes.

My 0.02€

Cheers

Andreas
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| Andreas Heigl                                                       |
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