other/opposite_monoid.cpp

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• Last update: 2020-02-11 11:45:48+09:00

Required by

• Queue Aggregation (data_structure/queue_aggregation.cpp)

Verified with

• test/queue_aggregation.test.cpp

Code

template <class M> class opposite_monoid {
  using T = typename M::value_type;

public:
  using value_type = T;
  static constexpr T operation(const T &l, const T &r) noexcept {
    return M::operation(r, l);
  }
  static constexpr T identity = M::identity;
};

#line 1 "other/opposite_monoid.cpp"
template <class M> class opposite_monoid {
  using T = typename M::value_type;

public:
  using value_type = T;
  static constexpr T operation(const T &l, const T &r) noexcept {
    return M::operation(r, l);
  }
  static constexpr T identity = M::identity;
};

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