id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12068	boost::filtered_range is not default constructible	Aleksej Lebedev <root@…>	Neil Groves	"Filtered_range is not default_constructible which makes it impossible to (for example) put it into a class that has to be default-initialized and resets it (filtered_range) later.

I'm quite new to boost internals, but I fail to see any drawbacks of adding the default constructor:

--- include/boost/range/adaptor/filtered.hpp.orig	2016-03-14 15:26:32.228892237 +0100
+++ include/boost/range/adaptor/filtered.hpp	2016-03-14 15:26:28.724846102 +0100
@@ -41,6 +41,8 @@
             typedef typename default_constructible_unary_fn_gen<P, bool>::type
                 pred_t;
 
+            filtered_range() {}
+
             filtered_range(P p, R& r)
             : base(make_filter_iterator(pred_t(p),
                                         boost::begin(r), boost::end(r)),

"	Feature Requests	new	To Be Determined	range	Boost 1.59.0	Problem		filtered_range, adaptors