Function swap

3rd/nlohmann_json/include/nlohmann/json.hpp:6108–6121

! @brief exchanges the values Exchanges the contents of the JSON value with those of @a other. Does not invoke any move, copy, or swap operations on individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated. @param[in,out] other JSON value to exchange the contents with @complexity Constant. @liveexample{The example

    @since version 1.0.0
    */
    void swap(reference other) noexcept (
        std::is_nothrow_move_constructible<value_t>::value&&
        std::is_nothrow_move_assignable<value_t>::value&&
        std::is_nothrow_move_constructible<json_value>::value&&
        std::is_nothrow_move_assignable<json_value>::value
    )
    {
        std::swap(m_type, other.m_type);
        std::swap(m_value, other.m_value);

        set_parents();
        other.set_parents();
        assert_invariant();
    }

    /*!
    @brief exchanges the values