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

From: Thorsten Ottosen (tottosen_at_[hidden])
Date: 2006-02-11 05:40:26

David Abrahams wrote:
> "Bill Buklis" <boostuser_at_[hidden]> writes:
> 
> 
>>The predicate for std::find_if requires *iterator for the parameter.
>>However, with ptr_map *iterator returns a reference to the element value
>>instead of the key/value pair. Normally this is fine (in general code I like
>>this feature)
> 
> 
> Yikes, this sounds like a gratuitous inconsistency with the standard
> map semantics, and not one that's "obviously better" than the standard
> one.  Why be inventive here?

well, the general idea of the library is to hide direct access to the 
pointers. its shows up most in ptr_map.

the alternative would be to return a "pair-proxy" from operator*().

-Thorsten