swap
语法:
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void swap( deque &target ); |
swap()函数交换target和现双向队列中元素。
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源代码 /** * @brief Swaps data with another %deque. * @param x A %deque of the same element and allocator types. * * This exchanges the elements between two deques in constant time. * (Four pointers, so it should be quite fast.) * Note that the global std::swap() function is specialized such that * std::swap(d1,d2) will feed to this function. */ void swap(deque& __x) { std::swap(this->_M_impl._M_start, __x._M_impl._M_start); std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish); std::swap(this->_M_impl._M_map, __x._M_impl._M_map); std::swap(this->_M_impl._M_map_size, __x._M_impl._M_map_size); } |
测试代码
测试结果
1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0