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-rw-r--r--butl/utility15
1 files changed, 6 insertions, 9 deletions
diff --git a/butl/utility b/butl/utility
index b1fa8f6..6efa4d0 100644
--- a/butl/utility
+++ b/butl/utility
@@ -5,6 +5,7 @@
#ifndef BUTL_UTILITY
#define BUTL_UTILITY
+#include <utility> // forward()
#include <cstring> // strcmp
namespace butl
@@ -32,22 +33,18 @@ namespace butl
template <typename T>
class reverse_range
{
- T& x_;
+ T x_;
public:
- reverse_range (T& x): x_ (x) {}
+ reverse_range (T&& x): x_ (std::forward<T> (x)) {}
- auto begin () -> decltype (this->x_.rbegin ()) {return x_.rbegin ();}
- auto end () -> decltype (this->x_.rend ()) {return x_.rend ();}
+ auto begin () const -> decltype (this->x_.rbegin ()) {return x_.rbegin ();}
+ auto end () const -> decltype (this->x_.rend ()) {return x_.rend ();}
};
template <typename T>
inline reverse_range<T>
- reverse_iterate (T& x) {return reverse_range<T> (x);}
-
- template <typename T>
- inline reverse_range<const T>
- reverse_iterate (const T& x) {return reverse_range<const T> (x);}
+ reverse_iterate (T&& x) {return reverse_range<T> (std::forward<T> (x));}
}
#endif // BUTL_UTILITY