Method insert

include/tsl/ordered_map.h:236–238

  void clear() noexcept { m_ht.clear(); }

  std::pair<iterator, bool> insert(const value_type& value) {
    return m_ht.insert(value);
  }

  template <class P, typename std::enable_if<std::is_constructible<
                         value_type, P&&>::value>::type* = nullptr>