Use const& for std::unary_function Arg parameter

Clear TODO item for query_transformation feature (ticket #66)
SOCI · Feb 27, 2013 · 9c81db2 · 9c81db2
1 parent 9fffdf6
commit 9c81db2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/core/query_transformation.h b/src/core/query_transformation.h
@@ -19,7 +19,7 @@ namespace details
 {
 
 // TODO: use std::unary_function<const std::string&, std::string>
-class query_transformation_function : public std::unary_function<std::string, std::string>
+class query_transformation_function : public std::unary_function<std::string const&, std::string>
 {
 public:
     virtual result_type operator()(argument_type a) const = 0;