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, 12 insertions, 2 deletions

diff --git a/src/list/operation/higher/drop_while.h b/src/list/operation/higher/drop_while.h
index 8ba2664..021698f 100644
--- a/src/list/operation/higher/drop_while.h
+++ b/src/list/operation/higher/drop_while.h
@@ -5,16 +5,18 @@
 
 namespace tav {
 
+namespace detail {
+
 template <
 	template<typename> class Predicate,
 	typename                 Current
 >
 struct DropWhile {
-	typedef Eval<If<
+	typedef If<
 		Eval<Predicate<Head<Current>>>,
 		Eval<DropWhile<Predicate, Tail<Current>>>,
 		Current
-	>> type;
+	> type;
 };
 
 template <
@@ -26,4 +28,12 @@ struct DropWhile<Predicate, void> {
 
 }
 
+template <
+	template<typename> class Predicate,
+	typename                 Current
+>
+using DropWhile = Eval<detail::DropWhile<Predicate, Current>>;
+
+}
+
 #endif  // TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_DROP_WHILE_H_