> On 6 Nov 2014, at 11:43, Daniel Ribeiro <[email protected]> wrote:
>
> On Thu, Nov 6, 2014 at 3:36 PM, Andrea Faulds <[email protected]> wrote:
>
>> Perhaps, dare I say it, we should merge the constant and class namespaces
>> in PHP7? Those are perhaps the least likely to conflict. It’d mean we could
>> handle instanceof expressions, and we wouldn’t need to use ::class.
>
>
> Hi Andrea!
>
> I'm not sure I understand what you mean by "don't need to use ::class”.
By merging the symbol tables, you could reference classes like constants
(perhaps it’d return some sort of ReflectionClass-like thing?):
$x = SomeClass;
$foo = new $x;
Currently, because SomeClass above would resolve to a constant, you have to use
the weird pseudo-constant ::class:
$x = SomeClass::class;
It also would mean instanceof could accept arbitrary expressions, as there’d be
no syntactic ambiguity:
class Foo {}
const Bar = ‘Foo';
$x = (new Foo) instanceof Bar; // works (Bar resolves to ‘Foo’, valid class
name)
$x = (new Foo) instanceof Foo; // works (Foo is a class)
const Foo; // Not allowed, conflicts with class
--
Andrea Faulds
http://ajf.me/
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