C++ Deque Library - operator= Function

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Description

The C++ function std::deque::operator= assign new contents to the deque by replacing old ones. It modifies size of the deque if necessary.

Declaration

Following is the declaration for std::deque::operator= function form std::deque header.

C++98

deque& operator= (const deque& x);

C++11

deque& operator= (const deque& x);

Parameters

x − another deque object of same type

Return value

Returns this pointer

Exceptions

This member function never throws exception.

Time complexity

Linear i.e. O(n)

Example

The following example shows the usage of std::deque::operator= function.

#include <iostream>
#include <deque>

using namespace std;

int main(void) {

   deque<int> d1 = {1, 2, 3, 4, 5};
   deque<int> d2;

   d2 = d1;

   cout << "Contents of deque are" << endl;

   for (auto it = d2.begin(); it != d2.end(); ++it)
      cout << *it << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

Contents of deque are
1
2
3
4
5