[boost] Re: Collection concept

From: jsiek_at_[hidden]
Date: 2000-01-12 11:51:58

Howard Hinnant writes:
 > This is result of my experience with vector<bool>.  I don't have 
 > extensive experience with proxied containers other than this one.  But 
 > the point is, if I'm wanting to sort a vector<bool>, I don't give a flip 
 > if I can call flip on a reference. ;-)  All I care about is that I can 
 > call swap on two references.  So I require:
 > 
 > 		static void swap(reference x, reference y);

Yes, I think swap is a fundamental operation that proxies should
support. I put swap in my write-up of the requirements for Proxy. 

 > member functions in the proxy class.  And the proxy need not completely 
 > duplicate the functionality of an actual reference to be useful for a 
 > given algorithm.

The down side of the current formulation is that it rules out proxied
container's with value types that have members (unlike vector<bool>).
The question is whether this down side is compensated by the reduced
confusion/error potential. Unless there are real examples of such
proxied containers that people find usefull I would suggest that we
stay with the more conservative formulation.

Cheers,

Jeremy