vector_pro::front

C++

value_type& front();

Access element

Returns a reference to the first element in the vector.

Please note that calling this function on an empty will get an exception .

Parameters

none

Return value

A reference to the first element in the vector.

Example

C++

// vector_pro::front
#include <iostream>
#include "vector_pro.h"

/**
 * Output:
 * myvector.front() is now 62
 */

int main ()
{
  vector_pro<int> myvector;

  myvector.push_back(78);
  myvector.push_back(16);

  // now front equals 78, and back 16

  myvector.front() -= myvector.back();

  std::cout << "myvector.front() is now " << myvector.front() << '\n';

  return 0;
}

Complexity

Constant.