_If.h

#pragma once
 
namespace mel
{
    namespace mpl
    {
        template <bool Cond,class T,class U>
        struct _if
        {
            typedef T Result;
        };
        template <class T,class U>
        struct _if<false,T,U>
        {
            typedef U Result;
        };
        template <bool Cond,int t,int u> struct _ifInt
        {
            enum {result = t};
        };
        template <int t,int u> struct _ifInt<false,t,u>
        {
            enum {result = u};
        };
 
    }
}