Revamped to use `Cons` as a function and `Pair` as its result

* this is analogous to _Scheme_ where a pair (dot-expression) is returned from a call to `cons`
* `Head` and `Tail` are kept as direct references to the `CAR` and `CDR` values of a pair to match e.g. the math operators

1 files changed, 4 insertions, 6 deletions

diff --git a/src/list/operation/higher/map.h b/src/list/operation/higher/map.h
index a451b2a..9cb6524 100644
--- a/src/list/operation/higher/map.h
+++ b/src/list/operation/higher/map.h
@@ -15,12 +15,10 @@ class Map {
 			typename Current,
 			typename Previous
 		>
-		struct function_wrapper {
-			typedef Cons<
-				typename Function<Current>::type,
-				Previous
-			> type;
-		};
+		using function_wrapper = Cons<
+			typename Function<Current>::type,
+			Previous
+		>;
 
 	public:
 		typedef typename Fold<function_wrapper, void, List>::type type;