On 3/11/2010 12:11 PM, David A. Greene wrote:
For the first attached testcase, can anyone explain why "Doesn't" doesn't?
Because fusion::transform is purely functional --takes its arguments as const and returns a transformed view and returns a view which is also const (immutable). In that regard, fusion is more like MPL (functional) than STL (imperative).
I would not expect the second test to compile. But is there some way to bridge the gap between fusion iterators, boost.Range ranges and standard iterators? Is there any way to turn a fusion iterator into a standard- conforming iterator?
There's no way I know that would allow that. First, fusion iterators have different types for each iterator position, unlike STL where begin and end and everything in between have a single iterator type. IOTW, fusion iterators are polymorphic. Regards, -- Joel de Guzman http://www.boostpro.com http://spirit.sf.net http://www.facebook.com/djowel Meet me at BoostCon http://www.boostcon.com/home http://www.facebook.com/boostcon