From 46e174935b122c0da4b51532a7f683a512eeaf65 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 15 Feb 2015 14:07:50 +0100
Subject: 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

---
 src/list/operation/higher/filter.h | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

(limited to 'src/list/operation/higher/filter.h')

diff --git a/src/list/operation/higher/filter.h b/src/list/operation/higher/filter.h
index 3588400..17d49c2 100644
--- a/src/list/operation/higher/filter.h
+++ b/src/list/operation/higher/filter.h
@@ -6,6 +6,8 @@
 
 namespace tav {
 
+namespace detail {
+
 template <
 	template<typename> class Predicate,
 	typename                 List
@@ -18,28 +20,22 @@ class Filter {
 		>
 		using predicate_wrapper = If<
 			Eval<Predicate<Current>>,
-			Eval<Cons<Current, Previous>>,
+			Cons<Current, Previous>,
 			Previous
 		>;
 
 	public:
-		typedef Eval<Fold<predicate_wrapper, void, List>> type;
+		typedef tav::Fold<predicate_wrapper, void, List> type;
 
 };
 
+}
+
 template <
 	template<typename> class Predicate,
 	typename                 List
 >
-class Remove {
-	private:
-		template <typename Element>
-		using predicate_negator = Not<Predicate<Element>>;
-
-	public:
-		typedef Eval<Filter<predicate_negator, List>> type;
-
-};
+using Filter = Eval<detail::Filter<Predicate, List>>;
 
 }
 
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