Class Key

test/test_const_multiset_ext_constexpr.cpp:50–65

The key type

  // The key type
  //*************************************************************************
  struct Key
  {
    // Default constructor
    constexpr Key()
      : k(0)
    {
    }

    // Construct from char key
    constexpr explicit Key(char k_)
      : k(k_)
    {
    }

    char k;
  };

  // Less-than operator for Key < Key
  constexpr bool operator<(const Key& lhs, const Key& rhs) noexcept