Boost traits to check if an object is STL containe

问题:

I am refactoring a serialization library in my project so that it compiles with -std=c++11 and want to identify if an object is a STL container, e.g.

is_stl_deque<T>::value
is_stl_list<T>::value 
is_stl_vector<T>::value
is_set<T>::value
is_map<T>::value
is_pair<T>::value
is_sequence<T>::value

Is there any boost trait to check if an object is a STL container ?

If not (I couldn't find any), how can I implement one ?

回答1:

I don't know if there's anything in boost, but the things in your list are easily implementable with partial specialization:

template<class T>
struct is_vector : std::false_type { };

template<class T, class Alloc>
struct is_vector<std::vector<T, Alloc>> : std::true_type { };