Re: [Boost-users] is_foo_type naming rule

2013/3/8 Niitsuma Hirotaka :

There are two type is_foo_type functor For example is_double can be

--------- template<typename T> struct is_double_template : boost::is_same {}; ---------

or

--------- struct is_double_runtime { template<typename T> bool operator()(T x){return false;} bool operator()(double x){return true;} };

Why don't you just use BOOST_TYPEOF(x) macro? T d; std::cout << is_double<T>::value << std::endl; std::cout << is_double::value << std::endl; -- Best regards, Antony Polukhin