Re: [Boost-users] implementing an iterator

From: Stefan Strasser (sstrasser_at_[hidden])
Date: 2005-02-04 17:03:42

Chris Goller schrieb:
> I'm using iterator_facade to implement an iterator over file based data.
> 
> So, my question is, since deference returns a reference to a value does 
> that reference need to persist when the iterator is incremented or 
> decremented?

yes it has. but the reference type does not have to be necessarily a c++ 
reference. it is by default, but you can change the reference type to 
the value type, to a shared_ptr, whatever you want by setting the, I 
think, 4th template parameter of iterator_facade.

> 
> Because this is file based data I can't always keep a reference around 
> because the data is stored on disk.
> 
> 
> Thanks,
> 
> Chris
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> 

-- 
Stefan Strasser