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From: Chris Weed (chrisweed_at_[hidden])
Date: 2007-11-20 12:07:16

> Recently, I've implemented a simple utility which allows users to
> select the nth element of an STL pair / Boost.Tuple in conjunction
> with STL algorithms. This allows precisely the following usage
> semantics:

It would also be nice to make this work with transform_iterator.
For example

#include <boost/iterator/transform_iterator.hpp>
std::list<boost::tuple<double, double, double> > coord_list;
coord_list.push_back(boost::make_tuple(1.0, 2.0, 3.0));
coord_list.push_back(boost::make_tuple(4.0, 5.0, 6.0));

 std::ostream_iterator<double>(std::cout, " ")); // output "1.0 4.0 "

This would require your select functor conforming to result_of, and
transform_iterator using it.


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