Moved class-based implementations into `detail` namespace

* while class templates enable e.g. hiding implementation details they also require evaluation via `Eval`
** this clutters up the actual logic and is now hidden behind aliae that perform the evaluation

1 files changed, 9 insertions, 6 deletions

diff --git a/src/list/operation/basic.h b/src/list/operation/basic.h
index 5f9a3f9..a299938 100644
--- a/src/list/operation/basic.h
+++ b/src/list/operation/basic.h
@@ -6,21 +6,24 @@
 
 namespace tav {
 
-template <typename Cons>
+namespace detail {
+
+template <typename List>
 class Length {
 	private:
 		template <typename, typename Accumulated>
 		using accumulate = Add<Size<1>, Accumulated>;
 
 	public:
-		typedef Eval<Fold<
-			accumulate,
-			Size<0>,
-			Cons
-		>> type;
+		typedef tav::Fold<accumulate, Size<0>, List> type;
 
 };
 
 }
 
+template <typename List>
+using Length = Eval<detail::Length<List>>;
+
+}
+
 #endif  // TYPEASVALUE_SRC_LIST_OPERATION_BASIC_H_