Container_trait.hpp

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#ifndef CONTAINER_TRAIT_H_
#define CONTAINER_TRAIT_H_
 
#include <map>
#include <set>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
 
namespace dice::hash {
 
    template<typename T>
    struct is_unordered_container : std::false_type {};
 
    template<class Key, class T, class Hash, class KeyEqual, class Allocator>
    struct is_unordered_container<std::unordered_map<Key, T, Hash, KeyEqual, Allocator>> : std::true_type {};
 
    template<class Key, class Hash, class KeyEqual, class Allocator>
    struct is_unordered_container<std::unordered_set<Key, Hash, KeyEqual, Allocator>> : std::true_type {};
 
    template<typename T>
    constexpr bool is_unordered_container_v = is_unordered_container<T>::value;
 
    template<typename T>
    struct is_ordered_container : std::false_type {};
 
    template<class Key, class T, class Compare, class Allocator>
    struct is_ordered_container<std::map<Key, T, Compare, Allocator>> : std::true_type {};
 
    template<class Key, class Compare, class Allocator>
    struct is_ordered_container<std::set<Key, Compare, Allocator>> : std::true_type {};
 
    template<typename T>
    constexpr bool is_ordered_container_v = is_ordered_container<T>::value;
 
}// namespace dice::hash
 
#endif