Method begin

less_slow.cpp:6997–6997

    }

    type_ *begin() const noexcept { return data_; }
    type_ *end() const noexcept { return data_ + size_; }
    type_ &operator[](std::size_t idx) noexcept { return data_[idx]; }
    type_ operator[](std::size_t idx) const noexcept { return data_[idx]; }