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list::erase

 

Removes an element or a range of elements in a list from specified positions.


      iterator erase(
   iterator _Where
);
iterator erase(
   iterator _First,
   iterator _Last
);

_Where

Position of the element to be removed from the list.

_First

Position of the first element removed from the list.

_Last

Position just beyond the last element removed from the list.

A bidirectional iterator that designates the first element remaining beyond any elements removed, or a pointer to the end of the list if no such element exists.

No reallocation occurs, so iterators and references become invalid only for the erased elements.

erase never throws an exception.

Example

// list_erase.cpp
// compile with: /EHsc
#include <list>
#include <iostream>

int main( ) 
{
   using namespace std;
   list <int> c1;
   list <int>::iterator Iter;

   c1.push_back( 10 );
   c1.push_back( 20 );
   c1.push_back( 30 );
   c1.push_back( 40 );
   c1.push_back( 50 );
   cout << "The initial list is:";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   c1.erase( c1.begin( ) );
   cout << "After erasing the first element, the list becomes:";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;
   Iter = c1.begin( );
   Iter++;
   c1.erase( Iter, c1.end( ) );
   cout << "After erasing all elements but the first, the list becomes: ";
   for (Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;
}
The initial list is: 10 20 30 40 50
After erasing the first element, the list becomes: 20 30 40 50
After erasing all elements but the first, the list becomes:  20

Requirements

Header: <list>

Namespace: std

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