Hi Nieuwenhuizen, >Can anybody tell me how to solve this? You already have an iterator in hand, why doesn't this work... Persons->remove(Piter); // Stroustrup C++PL p452 ...? (And doesn't that then invalidate your iterator?) Why don't use you use the list<>.remove_if(Predicate); function (Stroustrup C++PL p472)? Or, alternatively, the remove_if(ForwardIter, ForwardIter, Predicate) (Stroustrup C++PL p536) from <algorithm>. If you have Stroustrup C++PL Special Edition, also look at p956 in Appendix E. NOTE: from the compiler warning, I reckon your class may need to have a... bool operator == (Person const& rhs) const; ...method. HTH, --Eljay
