Avoid concrete return type to fix possible MSVC warning C4686.

Author: sreiter

include/moose/range.h

@@ -32,4 +32,10 @@ namespace moose
     Iterator begin;
     Iterator end;
   };
+
+  template <class Iterator>
+  auto makeRange (Iterator const& begin, Iterator const& end) -> Range<Iterator>
+  {
+    return {begin, end};
+  }
 }//  end of namespace moose

include/moose/stl_serialization.h

@@ -56,9 +56,9 @@ namespace moose
 
     static constexpr bool wantsToUnpack = true;
 
-    static auto toRange (Type& vector) -> Range <decltype (vector.begin ())>
+    static auto toRange (Type& vector)
     {
-      return {vector.begin (), vector.end ()};
+      return makeRange (vector.begin (), vector.end ());
     }
 
     static void pushBack (Type& vector, ValueType const& value)
@@ -77,9 +77,9 @@ namespace moose
 
     static constexpr EntryType entryType = EntryType::Vector;
 
-    static auto toRange (Type& map) -> Range <decltype (map.begin ())>
+    static auto toRange (Type& map)
     {
-      return {map.begin (), map.end ()};
+      return makeRange (map.begin (), map.end ());
     }
 
     static void pushBack (Type& map, ValueType const& value)
@@ -97,9 +97,9 @@ namespace moose
 
     static constexpr EntryType entryType = EntryType::Vector;
 
-    static auto toRange (Type& set) -> Range <decltype (set.begin ())>
+    static auto toRange (Type& set)
     {
-      return {set.begin (), set.end ()};
+      return makeRange (set.begin (), set.end ());
     }
 
     static void pushBack (Type& set, ValueType const& value)

include/moose/type_traits.h

@@ -122,9 +122,9 @@ namespace moose
   struct DefaultRangeTraits
   {
     static constexpr EntryType entryType = EntryType::Range;
-    static auto toRange (T& container) -> Range <decltype (container.begin ())>
+    static auto toRange (T& container)
     {
-      return {container.begin (), container.end ()};
+      return makeRange (container.begin (), container.end ());
     }
   };