struct S(alias Func)

{

    pragma(msg, __traits(identifier, Func));

}

​

int func(int a)

{

    return a*2;

}

​

void main()

{

    auto a = S!(a => a*2)();

    auto b = S!(a => a*2)();

    // Comment above. Then uncomment below for a working version.

    /*

    auto a = S!func();

    auto b = S!func();

    */

    pragma(msg, typeof(a));

    pragma(msg, typeof(b));

    a = b;

}