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From: Arno Schödl (aschoedl_at_[hidden])
Date: 2008-09-01 14:55:04

> If I understand Giovanni's implementation correctly, it only needs to
> expand one layer at a time.

Let's expand it:

  iterator begin() const{
       return iterator(begin(m_range), end(m_range), m_f);


  return iterator( iterator( begin(subrange), end(subrange), m_f ), iterator( end(subrange), end(subrange), m_f ), m_f);



The expansion will terminate when begin/end(sub...subrange) is the base iterator. Then the call is made to the filter_iterator ctor, which calls the associated_range<filter_iterator> ctor, which condenses everything back down.


Dr. Arno Schoedl · aschoedl_at_[hidden] 
Technical Director 
think-cell Software GmbH · Invalidenstr. 34 · 10115 Berlin, Germany · phone +49-30-666473-10 · toll-free (US) +1-800-891-8091
Directors: Dr. Markus Hannebauer, Dr. Arno Schoedl · Amtsgericht Charlottenburg, HRB 85229

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