Re: [boost] [iterator] iterator_facade reference type problem

Phil Endecott wrote:

Dear All,

But what do I do about the reference type? I can't use std::pair<const KEY,VALUE>& because I'm not storing the keys and values in that way. It's almost possible to use std::pair<KEY,VALUE> for a const_iterator, but not if you want to allow the user to change the value through the reference.

You are iterating over 2 vectors in parallel? Isn't that the job of zip_iterator? If you insist on using iterator_facade, my guess would be, since dereferencing creates a temporary, that iterator_facade::Reference must be explicitly Value, not Value& (the default).