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, 1 insertions, 1 deletions

diff --git a/src/list/operation/higher/filter.h b/src/list/operation/higher/filter.h
index 3fc08ee..acc1422 100644
--- a/src/list/operation/higher/filter.h
+++ b/src/list/operation/higher/filter.h
@@ -18,7 +18,7 @@ class Filter {
 		>
 		using predicate_wrapper = If<
 			Predicate<Current>::type::value,
-			Cons<Current, Previous>,
+			typename Cons<Current, Previous>::type,
 			Previous
 		>;