priority_queue::top (STL/CLR)

Accesses the highest-priority element.

    reference top();

Remarks

The member function returns a reference to the top (highest-priority) element of the controlled sequence, which must be non-empty. You use it to access the highest-priority element, when you know it exists.

Example

// 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); 
    } 
 

 c a b
top() = c
 x a b

Requirements

Header: <cliext/queue>

Namespace: cliext

See Also

Concepts

priority_queue (STL/CLR)

priority_queue::top_item (STL/CLR)