diff options
| -rw-r--r-- | libbutl/utility.mxx | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/libbutl/utility.mxx b/libbutl/utility.mxx index 988ca22..4c83827 100644 --- a/libbutl/utility.mxx +++ b/libbutl/utility.mxx @@ -162,7 +162,10 @@ LIBBUTL_MODEXPORT namespace butl struct compare_pointer_target { template <typename P> - bool operator() (const P& x, const P& y) const {return *x < *y;} + bool operator() (const P& x, const P& y) const + { + return *x < *y; + } }; //struct hash_pointer_target @@ -171,6 +174,17 @@ LIBBUTL_MODEXPORT namespace butl // std::size_t operator() (const P& x) const {return std::hash (*x);} //}; + // Compare two std::reference_wrapper's. + // + struct compare_reference_target + { + template <typename R> + bool operator() (const R& x, const R& y) const + { + return x.get () < y.get (); + } + }; + // Combine one or more hash values. // inline std::size_t |