id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
8327,iostream header and std::cout in hpp files must be removed.,pjtsu,John Maddock,"I think that direct including iostream header and ostream instance like cout, cerr or so must be deprecated.

Reasons
* to support environment which ostream is forbidden like embedded systems.
* to entrust output type to library user.
Alternative plan is to replace ostream instance to template-type as below.[[BR]]
- before
{{{#!c
template <typename Iter>
void PrintTest(Iter first, Iter last)
{
	std::cout << std::distance(first, last) << "": ( "";
	for (Iter iter = first; iter != last; ++iter) {
		std::cout << *iter << "" "";
	}
	std::cout << "")"" << std::endl;
}
}}}
- after
{{{#!c
template <typename Stream, typename Iter>
void PrintTest(Stream& ostr, Iter first, Iter last)
{
	ostr << std::distance(first, last) << "": ( "";
	for (Iter iter = first; iter != last; ++iter) {
		ostr << *iter << "" "";
	}
	ostr << "")"" << std::endl;
}
}}}
- Even if ostream header is not included, std::distance() and std::endl are ignored until !PrintTest() is substantialized.

Subject
* boost/algorithm/searching/detail/debugging.hpp
* boost/graph/graph_utility.hpp
* boost/math/constants/generate.hpp
* boost/pending/relaxed_heap.hpp
* or so ...",Support Requests,closed,To Be Determined,math,Boost 1.53.0,Problem,fixed,,