Re: [Boost-users] [ptr_container] ptr_map predicates

From: David Abrahams (dave_at_[hidden])
Date: 2006-02-11 13:50:43

"Bill Buklis" <boostuser_at_[hidden]> writes:

>>From an aesthetics standpoint, it would be nice to have the two types of
> iterators depending on what you need. The code would be more readable. It
> would also shut those up who complain about the iterators not acting like
> std::map. "Look, use map_iterator if you want that!" Also in those cases
> where you do need both the key and the value, you wouldn't have to cast the
> void* back to the correct object type.

>From an aesthetics standpoint, you should re-use transform_iterator
with the appropriate function object to project a tuple of references
into either the first or second element, rather than fattening the
interface of this particular container.  That transform_iterator idiom
could then be re-used with std::map.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com