#1120 でどう検出されるかtest

[yumetodo]

CI回ったら閉じます

[yumetodo]

reference/algorithm/ranges_equal.md: `invoke` not found in code block.
namespace std::ranges {
  template <input_iterator I1,
            sentinel_for<I1> S1,
            input_iterator I2,
            sentinel_for<I2> S2,
            class Pred = ranges::equal_to,
            class Proj1 = identity,
            class Proj2 = identity>
    requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
  constexpr bool
    equal(I1 first1,
          S1 last1,
          I2 first2,
          S2 last2,
          Pred pred = {},
          Proj1 proj1 = {},
          Proj2 proj2 = {}); // (1) C++20

  template <input_range R1,
            input_range R2,
            class Pred = ranges::equal_to,
            class Proj1 = identity,
            class Proj2 = identity>
    requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
  constexpr bool
    equal(R1&& r1,
          R2&& r2,
          Pred pred = {},
          Proj1 proj1 = {},
          Proj2 proj2 = {}); // (2) C++20
}

なるほど。