import std.meta;

​

void main()

{

    pragma(msg, __traits(getMember, A, "Foo1").stringof); // Foo1(int N) if (N & 1)

    pragma(msg, __traits(getAttributes, __traits(getMember, A, "Foo1"))); // tuple("int", "odd")

    alias f1a = Instantiate!(__traits(getMember, A, "Foo1"), 1); // This is expected

    pragma(msg, f1a); // A

    alias f1b = Instantiate!(__traits(getMember, A, "Foo1"), "+"); // Why would I know that I can even instantiate?? Also, can I haz UDA plz?

    pragma(msg, f1b); // B

}

​

class A {

    @("int", "odd")

    template Foo1(int N) if (N & 1)    {

        enum Foo1 = "A";

    }

    @("string", "+")

    template Foo1(string op) if (op == "+") {

        enum Foo1 = "B";

    }

}