C++ template meta-programming debug tool.

This tool will help print real type info while template meta function running(code compiling).

GNU General Public License V3.0

This is a header only library, just include to use.

If you want to know what types user put in yout template meta function, and it's hard to deduce by yourself, you can use this tool as below

// yout template function
template<typename... T>
struct my_meta_func
{
    // what the type is
    using type = typename another_meta_func<T...>::type;
}

int main(int argc, char* argv){
    // wonder what t is?
    using t = typename my_meta_func<int, double, void>::type;
    // use detector show what t is, if t is not void
    using out = typename detecor<!std::is_same<t, void>::value, t>::type;
}

While compiling, you will see info like below reveal what type t is

detector.h: In instantiation of ‘struct detector<true, std::tuple<int&, double&, void&> >’:
...

so t in main is std::tuple<int&, double&, void&>

No guarantee for other compilers except for g++ 4.8 or later.