On 03/06/2016 15:58, Thomas Bley wrote:
To me type declarations help to make my code easier and more consistent. Having multiple scalar types for a single function parameter is against this goal since I need extra logic to handle this.e.g. function foo(string | int | bool $bar) {} makes no sense in weak mode since string can already handle int, bool, float, etc. having different behavior between foo("42"); function foo(string $b) {echo gettype($b);} // string and foo("42"); function foo(string | int $b) {echo gettype($b);} // integer also makes no sense to me. Things like string|array are useful (e.g. str_replace) since we can cast the string easily to array and calling a string parameter with an array would give a fatal error.
That is a useful case, and don't forget also return values, e.g. all the XX|false-kind of return types it's also nice to have.
I don't think for function arguments it's massively useful and I doubt it'll get put everywhere, but it's nice to be able to express this when you have to.
Cheers -- Jordi Boggiano @seldaek - http://seld.be -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
