要有效地清除`std::queue`,您可以使用以下方法: 1. 使用`swap`方法: 创建一个新的空队列,并将其与要清除的队列交换。这样,新队列将变为空队列,原始队列将被清除。 ...
std::queue::swap void swap( queue& other ) noexcept(/* see below */); (since C++11) 将容器适配器的内容与other.有效地打电话usingstd::swap; swap(c, other.c); 参数 other - container adaptor to exchange the contents with 返回值...
这种方法利用了std::queue的成员函数swap。 cpp #include <queue> #include <iostream> int main() { std::queue<int> q; // 向队列中添加一些元素 q.push(1); q.push(2); q.push(3); // 清空队列 std::queue<int>().swap(q); // 此时队列为空 return 0; ...
void swap( std::queue<T, Container>& lhs, std::queue<T, Container>& rhs ); (since C++11) (until C++17) template< class T, class Container > void swap( std::queue<T, Container>& lhs, std::queue<T, Container>& rhs ) noexcept(/* see below */); (since C++17) Specializes...
voidswap(queue&other)noexcept(/* see below */); (since C++11) usingstd::swap;swap(c, other.c); Return value (none) Exceptions noexceptspecification: noexcept(noexcept(swap(c, other.c))) In the expression above, the identifierswapis looked up in the same manner as the one used by the...
void swap( priority_queue<T,Container,Compare>& lhs, priority_queue<T,Container,Compare>& rhs ) noexcept(/* see below */); (C++17 起) 为std::priority_queue 特化std::swap 算法。交换 lhs 与rhs 的内容。调用 lhs.swap(rhs)。 此重载仅若 std::is_swappable<Container>::value 与std::...
swap (queue): Exchange contents of queues (public member function ) Non-member class specializations uses_allocator: Uses allocator for queue (class template ) Code Example #include<iostream>#include<deque>#include<list>#include<queue>usingnamespacestd;intmain(intargc,char**argv){deque<int>deck(...
std::swap(std::queue) (C++11) specializes thestd::swapalgorithm (function template) Helper classes std::uses_allocator<std::queue> (C++11) specializes thestd::uses_allocatortype trait (class template specialization) std::formatter<std::queue> ...
bags.swap(teeth); std::cout << teeth.size() << std::endl; //输出:3 std::cout << bags.size() << std::endl; //输出:2 9.运算符 = != > >= < <= // [==]当两个队列front()内容一致,返回true std::queue<int> q1, q2; ...
std::swap(std::queue) (C++11) specializes thestd::swapalgorithm (function template) Helper classes std::uses_allocator<std::queue> (C++11) specializes thestd::uses_allocatortype trait (class template specialization) std::formatter<std::queue> ...