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Date: Sat, 14 May 2016 13:31:57 +0100
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To: Rasmus Schultz <rasmus@mindplay.dk>
Cc: Benjamin Eberlei <kontakt@beberlei.de>, PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Simple Annotations
From: danack@basereality.com (Dan Ackroyd)

On 14 May 2016 at 12:48, Rasmus Schultz <rasmus@mindplay.dk> wrote:
>
> Hack's memoize is an annotation for the language interpreter itself -
> that's beyond the scope of this RFC, but could be implemented in the
> future.

Please can you add something to the RFC that reserves the possibility
to do this, so that it can be introduced in a BC compatible way in the
future?

Hand-waving away problems and saying that they aren't in scope is a
sure-fire way to build deficiencies into a design.

This is not a smaller problem in userland code, as it is easy for
people to migrate from one library to another, but is almost
impossible to overcome in core PHP, where any BC-breaking change
causes lots of difficultly for end-users.

cheers
Dan