queue::front_item (STL/CLR)

發行項
06/07/2013

存取第一個項目。

    property value_type front_item;

備註

此屬性會存取受控制序列必須為非空白的第一個項目。您可以用它來讀取或寫入第一個項目，當您知道它的存在。

範例

// cliext_queue_front_item.cpp 
// compile with: /clr 
#include <cliext/queue> 
 
typedef cliext::queue<wchar_t> Myqueue; 
int main() 
    { 
    Myqueue 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("front_item = {0}", c1.front_item); 
 
// alter last item and reinspect 
    c1.front_item = L'x'; 
    for each (wchar_t elem in c1.get_container()) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    }