[boost] filter_iterator not bidirectional ?

From: Sylvain Pion (Sylvain.Pion_at_[hidden])
Date: 2003-05-05 13:27:59

Hi,

I was wondering why the filter_iterator could not be made bidirectional
when the base iterator is as well.
Is it because it would have to store the "begin" iterator ?
Actually I am wondering whether it should have to store the begin iterator
even in this case.

Would it be possible to make filter_iterator support operator-- ?

-- 
Sylvain