id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5817	Default template parameters for any_range	bromeon@…	Neil Groves	"Would it be possible that more template parameters of boost::any_range get a default value?

It seems like ''Reference'' and ''Difference'' mostly refer to the same types. The declaration could look like this:

{{{
#!cpp
template<
            class Value
          , class Traversal
          , class Reference = Value&
          , class Difference = std::ptrdiff_t
          , class Buffer = use_default
        >
        class any_range;
}}}

This would also be consistent with boost::iterator_facade."	Feature Requests	closed	Boost 1.56.0	range	Boost 1.47.0	Cosmetic	fixed