[Boost-users] Implementing Range Adaptor or "transformation" iterator

Subject: [Boost-users] Implementing Range Adaptor or "transformation" iterator
From: John M. Dlugosz (mpbecey7gu_at_[hidden])
Date: 2011-07-18 19:43:57

I see the documentation "doc/html/range/reference/extending/method_3/method_3_1.html" and 
want to do something like that.  The Adaptor I want to write will transform the elements 
and provide a lazy transformed view.

So, I need the return range to be a pair of transformed iterators, and a transform 
iterator works just like the underlying iterator only the * operator will apply my 
function to the value as it fetches it.

But, it seems to me that there should be something like that already.  Is there something 
I'm overlooking in STL or in some other Boost library?

Thanks,
—John