queue::front

queue::front (STL/CLR)

 

Accesses the first element.

reference front();

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

Example

// cliext_queue_front.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 first item 
    System::Console::WriteLine("front() = {0}", c1.front()); 

// alter first item and reinspect 
    c1.front() = L'x'; 
    for each (wchar_t elem in c1.get_container()) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    } 

 a b c
front() = a
 x b c

Requirements

Header: <cliext/queue>

Namespace: cliext

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