priority_queue::top (STL/CLR)

访问最高优先级的元素。

    reference top();

备注

成员函数返回对控件序列的顶部 (最高优先级的) 元素，必须为非 null。 您使用它访问最高优先级的元素，那么，当您知道存在)。

示例

// cliext_priority_queue_top.cpp 
// compile with: /clr 
#include <cliext/queue> 
 
typedef cliext::priority_queue<wchar_t> Mypriority_queue; 
int main() 
    { 
    Mypriority_queue c1; 
    c1.push(L'a'); 
    c1.push(L'b'); 
    c1.push(L'c'); 
 
// display initial contents " a b c" 
    for each (wchar_t elem in c1.get_container()) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// inspect last item 
    System::Console::WriteLine("top() = {0}", c1.top()); 
 
// alter last item and reinspect 
    c1.top() = L'x'; 
    for each (wchar_t elem in c1.get_container()) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    } 
 

要求

标题: <cliext/队列>

命名空间: cliext

请参见

参考

priority_queue (STL/CLR)

priority_queue::top_item (STL/CLR)