Question

Is there any way to tell if a template parameter is a specific base data type like int or unsigned int? std::is_base_of doesn’t do it, tried that. I’d like to write collections that can box all the basic data types but I can’t find a way to tell which type it is…

Answer 1

Use is_same. If you don’t have an implementation (std or boost) then use this:

template < typename T1, typename T2 >
struct is_same { enum { value = false }; };

template < typename T >
struct is_same <T,T> { enum { value = true }; };