On Tue, 2015-09-29 at 11:29 -0700, Sara Golemon wrote: > On Mon, Sep 28, 2015 at 10:30 PM, Pierre Joye <pierre....@gmail.com> wrote: > > This model totally failed for us in the past. And given that these keywords > > will be used for anything related to async APIs, let reserve them and put > > our users on the safe side already. > > > Like that time we reserved `use` way before namespaces made it into > the language?
Just for history: Actually we didn't reserve "use" on purpose. In commit 5463dd5b in November 1999 Andi implemented a "use" feature which worked like require_once, which was introduced later. The feature was removed but unused "use" was kept by accident. In 5.3 we decided to use this unused keyword instead of adding a new keyword. https://github.com/php/php-src/commit/5463dd5b387298a84736e590e5d213f5bafe9435 We never purposely introduced a keyword. Only comparable thing was backporting a the b"" prefix for binary strings from meanwhile abandoned PHP 6 to 5.2(?).for forward compatibility. That has proven to be useless. Again an indication not to add async/wait keywords *now* as placeholder. :-) johannes
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