containers.h

#ifndef H_CONTAINERS_INCLUDED
#define H_CONTAINERS_INCLUDED

#include <boost/container/flat_map.hpp>
#include <boost/container/small_vector.hpp>

using boost::container::flat_map;
using boost::container::small_vector;
template <typename K, typename V,
          typename AC = std::allocator<typename flat_map<K, V>::value_type>>
using tmap = flat_map<K, V, std::less<>, AC>;

template <typename K, typename V, std::size_t N = 4>
using vmap = flat_map<K, V, std::less<>, small_vector<std::pair<K, V>, N>>;

template <typename K, typename V, typename C, std::size_t N = 4>
using vmapc = flat_map<K, V, C, small_vector<std::pair<K, V>, N>>;

#endif