Use master syntax for rules

Author: lucic71

rules/map/src.cpp

@@ -135,24 +135,13 @@ std::map<T1, T2> &f26(std::map<T1, T2> &dst, const std::map<T1, T2> &src) {
   return dst.operator=(src);
 }
 
-template <
-    typename It,
-    typename T1 = typename std::remove_const<
-        typename std::iterator_traits<It>::value_type::first_type>::type,
-    typename T2 = typename std::iterator_traits<It>::value_type::second_type,
-    typename = typename std::enable_if<
-        std::is_same<It, typename std::map<T1, T2>::iterator>::value>::type>
-std::pair<const T1, T2> &f27(It it) {
-  return *it;
-}
-
-template <
-    typename It,
-    typename T1 = typename std::remove_const<
-        typename std::iterator_traits<It>::value_type::first_type>::type,
-    typename T2 = typename std::iterator_traits<It>::value_type::second_type,
-    typename = typename std::enable_if<std::is_same<
-        It, typename std::map<T1, T2>::const_iterator>::value>::type>
-const std::pair<const T1, T2> &f28(It it) {
-  return *it;
+template <typename T1, typename T2>
+std::pair<const T1, T2> &f27(typename std::map<T1, T2>::iterator it) {
+  return it.operator*();
+}
+
+template <typename T1, typename T2>
+const std::pair<const T1, T2> &
+f28(typename std::map<T1, T2>::const_iterator it) {
+  return it.operator*();
 }