diff options
Diffstat (limited to 'butl')
| -rw-r--r-- | butl/utility | 15 |
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 |