Is There Anything Like a Templatized Case-Statement

Question

So I have this really ugly code:

template 
std::conditional_t

        

Answer 1

The template version of a switch statement is a specialized template.

template struct matching_type;
template<> struct matching_type { typedef char type; };
template<> struct matching_type { typedef short type; };
template<> struct matching_type { typedef int type; };
template<> struct matching_type { typedef long type; };
template<> struct matching_type { typedef long long type; };

template
matching_type::type foo(T bar)
{
    return reinterpret_cast(bar);
}