Reference
C Library
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STL Containers
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list::list
list::~list
member functions:
list::assign
list::back
list::begin
list::clear
list::empty
list::end
list::erase
list::front
list::get_allocator
list::insert
list::max_size
list::merge
list::operator=
list::pop_back
list::pop_front
list::push_back
list::push_front
list::rbegin
list::remove
list::remove_if
list::rend
list::resize
list::reverse
list::size
list::sort
list::splice
list::swap
list::unique


list::operator=

public member function
list<T,Allocator>& operator= ( const list<T,Allocator>& x );

Copy container content

Assigns as the new content for the container a copy of the elements in x.

The elements contained in the object before the call are dropped, and replaced by copies of those in vector x, if any.

After a call to this member function, both the list object and x will have the same size and compare equal to each other.

Parameters

x
A list object containing elements of the same type.

Return value

*this

Example

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// assignment operator with lists
#include <iostream>
#include <list>
using namespace std;
int main ()
{
  list<int> first (3);      // list of 3 zero-initialized ints
  list<int> second (5);     // list of 5 zero-initialized ints
  second=first;
  first=list<int>();
  cout << "Size of first: " << int (first.size()) << endl;
  cout << "Size of second: " << int (second.size()) << endl;
  return 0;
}

Both list containers of int elements are initialized to sequences with different sizes. Then, second is assigned to first, so both are now equal and with a size of 3. And then, first is assigned to a newly constructed empty container object, so its size is finally 0. Output:
Size of first: 0
Size of second: 3

Complexity

Linear on sizes (destruction, copy construction).

See also

list::assign Assign new content to container (public member function)