add Enabler template argument to range_iterator, range_const_iterator and range_mutable_iterator extension points.

2014-06-04 12:23:40 +01:00
1 parent 698a083e65
commit 60025220f5
@@ -12,7 +12,7 @@ namespace boost
    // Single Pass Range metafunctions
    //

-    template< class T >
+    template< class T, class Enabler=void >
    struct range_iterator;

    template< class T >