Is There Anything Like a Templatized Case-Statement

Question

So I have this really ugly code:

template 
std::conditional_t

        

Answer 1

Something like this perhaps:

template  struct SuitablySized;

template<> struct SuitablySized {
  typedef char type;
};
template<> struct SuitablySized {
  typedef short type;
};
// Add more cases to taste

template 
typename SuitablySized::type foo(T bar);