Re: [Boost-Users] Iterators

From: George A. Heintzelman (georgeh_at_[hidden])
Date: 2002-02-21 17:51:26

> This isn't a boost specific message per se, I guess, but I thought
> someone here may know the answer.
> 
> I have a list<> of smart_ptrs. Some of the elements in the list are
> ready for processing under various circumstances.
> 
> What I'd like would be a custom iterator that when I say "++i" it checks
> the element to see if it's ready, and if not, advance to the next, and
> so on until it finds a ready element. If it doesn't find one, then i ==
> list.end(). This would simulate having a list that contained only ready
> elements, without having to have multiple lists.

This *is* a boost specific message!

Try the filter_iterator_adaptor in the iterator_adaptors library.

Cheers,

George Heintzelman
georgeh_at_[hidden]