How to write a type trait `is_container` or `is_vector`?

Question

Is it possible to write a type trait whose value is true for all common STL structures (e.g., vector, set, map, ...)?

To get s

Answer 1

In our project we still didn't manage to migrate to compiler supporting C++11, so for type_traits of container objects I had to wrote a simple boost style helper:

template struct is_std_container: boost::false_type {};
template 
struct is_std_container >: boost::true_type {};
template 
struct is_std_container >: boost::true_type {};
template 
struct is_std_container >: boost::true_type {};
template 
struct is_std_container >: boost::true_type {};
template 
struct is_std_container >: boost::true_type {};

template struct is_std_sequence: boost::false_type {};
template 
struct is_std_sequence >: boost::true_type {};
template 
struct is_std_sequence >: boost::true_type {};
template 
struct is_std_sequence >: boost::true_type {};