使用swap,这种是最高效的,定义clear,保持STL容器的标准。 voidclear(queue<int>& q){queue<int> empty; swap(empty, q); }
clear的作用就是清空deque中的所有元素 清空deque中所有元素,并且deque的大小变为0。使用clear()方法。 示例如下: #include<deque>#include<iostream>usingstd::cout;usingstd::deque;usingstd::endl;intmain(){deque<int> mydeque{1,2,3,4};cout <<"初始化后的mydeque为:";for(autonum : mydeque){cout ...
insert():插入元素。 clear():清除内容。 count():返回匹配特定键的元素数量。 find():寻找带有特定键的元素。 erase()--删除集合中的元素。
Clear() void 移除队列中的所有元素。 检查与复制 Contains(object item) bool 确定某元素是否存在于队列中。 ToArray() object[] 将队列中的元素复制到新数组中。 Clone() object 创建当前队列的浅表副本。 CopyTo(Array array, int index) void 将队列中的元素复制到现有数组,从指定索引开始。 枚举器支持 ...
you open the file, seek a particular location, and read from or write to that file. RandomAccessFiles can be seen as "large" C-type byte arrays that you can access at any random index "directly" using pointers. File portions can be used as ByteBuffers if the portion is mapped into ...
queue.put("C"); queue.put("Python"); String resultNotEmpty = queue.take(); assertEquals("Java", resultNotEmpty); // 测试队列为空时,会阻塞等待,一直等到队列不为空时再返回队首值 queue.clear(); String resultEmpty = queue.take(); // 阻塞等待 ...
queue - a line of people or vehicles waiting for something waiting line line - a formation of people or things one behind another; "the line stretched clear around the corner"; "you must wait in a long line at the checkout counter" bread line, breadline - a queue of people waiting for...
The cleared queue-based traffic statistics cannot be restored. Exercise caution when running the command. Procedure Run the reset qos queue statistics interface interface-type interface-number command to clear queue-based traffic statistics on the interface.Translation...
因为ConcurrentQueue<T>是线程安全的是Queue<T>的替代品，由于是线程安全的，所以它不会暴露或提供Clear方法给你,所以需要使用TryDequeue来尝试安全出队，以至于不影响其它线程的操作。static void Main(string[] args){ ConcurrentQueue<String> cqueue = new ConcurrentQueue<string>(); cqueue.Enqu...
{0}", c1.size()); System::Console::WriteLine("empty() = {0}", c1.empty()); // clear the container and reinspect c1.pop(); c1.pop(); c1.pop(); System::Console::WriteLine("size() = {0}", c1.size()); System::Console::WriteLine("empty() = {0}", c1.empty()); ...