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

[d-bugmail at puremagic.com]

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


Andrej Mitrovic <andrej.mitrovich at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrej.mitrovich at gmail.com


--- Comment #3 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2013-09-25 09:24:35 PDT ---
(In reply to comment #2)
> And, how this will work when multiple alias this is properly implemented?

I think we should think about adding a new 'is' expression for alias this
checks, because I've already ran into an issue with them interfering with the
is(T : X) syntax. I'm thinking we could introduce something like the following:

if (is(T : alias X)) => T has a subtype of type X

I can't find my other bug report right now where I mention this, I'll look into
it later.

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