| deque::front |
public member function |
reference front ( );
const_reference front ( ) const; |
|
Access first element
Returns a reference to the first element in the deque container.
Unlike member deque::begin, which returns an iterator to this same element, this function returns a direct reference.
Parameters
none
Return value
A reference to the first element in the
deque container.
Member types reference and const_reference are the reference types to the elements of the container (for the default storage allocation model, allocator, these are T& and const T& respectively).
Example
// deque::front
#include <iostream>
#include <deque>
using namespace std;
int main ()
{
deque<int> mydeque;
mydeque.push_front(77);
mydeque.push_back(16);
mydeque.front() -= mydeque.back();
cout << "mydeque.front() is now " << mydeque.front() << endl;
return 0;
}
|
Output:
mydeque.front() is now 61
|
Complexity
Constant.
See also
| deque::back | Access last element (public member function) |
| deque::begin | Return iterator to beginning (public member function) |
