Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
list::assign
abs
Collapse the table of content
Expand the table of content

list::assign (STL Samples) 

Illustrates how to use the list::assign Standard Template Library (STL) function in Visual C++.


void assign(
   const_iterator First,
   const_iterator Last
);
void assign(
   size_type n,
   const T& x = T( )
);
iterator erase(
   iterator It
);
iterator erase(
   iterator First,
   iterator Last
); bool empty( ) const;

NoteNote

The class/parameter names in the prototype do not match the version in the header file. Some have been modified to improve readability.

The first member function replaces the sequence controlled by *this with the sequence [First, Last). The second member function replaces the sequence controlled by *this with a repetition of n elements of value x. The third member function removes the element of the controlled sequence pointed to by It. The fourth member function removes the elements of the controlled sequence in the range [First, Last). Both return an iterator that designates the first element remaining beyond any elements removed, or end if no such element exists. The last member function returns true for an empty controlled sequence.

// assign.cpp 
// compile with: /EHsc
//
// Shows various ways to assign and erase elements
//        from a list<T>.
//
// Functions:
//    list::assign
//    list::empty
//    list::erase

#include <list>
#include <iostream>

using namespace std ;

typedef list<int> LISTINT;

int main()
{
    LISTINT listOne;
    LISTINT listAnother;
    LISTINT::iterator i;

    // Add some data
    listOne.push_front (2);
    listOne.push_front (1);
    listOne.push_back (3);

    listAnother.push_front(4);

    listAnother.assign(listOne.begin(), listOne.end());

    // 1 2 3
    for (i = listAnother.begin(); i != listAnother.end(); ++i)
        cout << *i << " ";
    cout << endl;

    listAnother.assign(4, 1);

    // 1 1 1 1
    for (i = listAnother.begin(); i != listAnother.end(); ++i)
        cout << *i << " ";
    cout << endl;

    listAnother.erase(listAnother.begin());

    // 1 1 1
    for (i = listAnother.begin(); i != listAnother.end(); ++i)
        cout << *i << " ";
    cout << endl;

    listAnother.erase(listAnother.begin(), listAnother.end());
    if (listAnother.empty())
        cout << "All gone\n";
}

1 2 3 
1 1 1 1 
1 1 1 
All gone

Header: <list>

Community Additions

ADD
Show:
© 2015 Microsoft