C++ List Library - assign() Function

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Description

The C++ function std::list::assign() assigns new values to list by replacing old ones. This member function assigns val to each element of list.

Declaration

Following is the declaration for std::list::assign() function form std::list header.

C++98

void assign (size_type n, const value_type& val);

C++11

void assign (size_type n, const value_type& val);

Parameters

• n − Number of elements.

• val − Value to be assigned to each element of the container.

Return value

None.

Exceptions

This member function never throws exception.

Time complexity

Linear i.e. O(n)

Example

The following example shows the usage of std::list::assign() function.

#include <iostream>
#include <list>

using namespace std;

int main(void) {
   list<int> l;

   l.assign(5, 10);

   cout << "List contains following element" << endl;

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

   return 0;
}

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

List contains following element
10
10
10
10
10