[Issue 11124] support "is (T : struct)" syntax

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11124



--- Comment #4 from monarchdodra at gmail.com 2013-09-25 09:53:24 PDT ---
(In reply to comment #2)
> And, how this will work when multiple alias this is properly implemented?

I don't understand the problem? Isn't it the same as, say: "is (C : int)"?

I don't see what is so special about struct:

class C
{
    T t;
    int i;
    alias t this;
    alias i this;
}
is (C == struct); //false
is (C == int); //false
is (C : struct); //true
is (C : int); //true

Or am I missing something obvious? Apologies in advance.

> I've already ran into an issue with them interfering with the
is(T : X) syntax

Isn't the point that they *do* interfere with such syntax?

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