Re: Deleting items from an std::list , is this code correct?

From:
Alex Shulgin <alex.shulgin@gmail.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Fri, 25 Apr 2008 03:42:15 CST
Message-ID:
<a124ea73-cbe2-4e0a-baad-20f128ae18e9@a1g2000hsb.googlegroups.com>
On Apr 24, 10:04 am, lallous <lall...@lgwm.org> wrote:

Hello Group,

Please advise. Does this work with all STL implementations?

Thank you,
Elias

[code]
#include <iostream>
#include <list>

typedef std::list<int> int_list_t;
typedef std::list<int_list_t::iterator> int_list_iterator_list_t;

void print_list(int_list_t &L)
{
   for (int_list_t::iterator it=L.begin();it!=L.end();++it)
   {
     std::cout << "value = " << *it << std::endl;
   }

}

void delete_odd(int_list_t &L)
{
   int_list_iterator_list_t it_list;
   int_list_t::iterator it;

   for (it=L.begin();it!=L.end();++it)
   {
     if (*it % 2 != 0)
       it_list.push_back(it);
   }

   for (int_list_iterator_list_t::const_iterator di=it_list.begin();di!
=it_list.end();++di)
   {
     L.erase(*di);
   }

}


It should work with any reasonable STL implementation.

But do you really need that list of iterators? Why not erase matching
list elements right away? :-)

--
Cheers,
Alex

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