Re: [RFC Discussion] Typed Properties

Hi, On Thu, Mar 17, 2016 at 8:46 PM, Andrey Andreev <narf@devilix.net> wrote: > I'd support borrowing the "?" nullable annotation from HackLang for >> people who want a less strict behavior: >> >> public ?string $name; >> >> This means that $name can either be a string or the NULL value. >> > > Or, do it like with parameter type hinting: > > public string $name = null; > > Although I'm all for limiting NULL to only being the default value: > > $this->name = null; // this should throw a TypeError NULL is special type. '' and NULL is different entity. class User { public string $username = NULL; } After authentication $username could be "yohgaki". What is should be after logout? $username = '' does not make sense, but $username = NULL. There are ways to work around this, but property cannot be NULL is problematic. IMO. class User { public string|null $username = NULL; } may work. I'm not sure if this is good idea in general. Regards, -- Yasuo Ohgaki yohgaki@ohgaki.net