Re: How can I test at compile time whether T is an instance of an interface ?

[H. S. Teoh via Digitalmars-d-learn]

Try this:

        interface I {}
        class C : I {}
        class D {}
        struct S {}

        pragma(msg, is(C : I)); // true
        pragma(msg, is(D : I)); // false
        pragma(msg, is(S : I)); // false

So probably what you want is something like this:

        void register(C, ARGS...)(ARGS args)
                if (behavesLikeFoo!C || is(C : IFoo))
                ...


T

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