From 8943b2e30f8275619df0cf89f1e8ebc7deb58ca5 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sat, 17 Jan 2015 22:48:39 +0100
Subject: Replaced `If` based `Nth` implementation with partial specializations
 * partial specializations offer control over lazy type instantiation ** `If`
 is currently only a `std::conditional` wrapper and requires further
 refinement to be really useful for this kind of use case

---
 src/list/operation/basic.h | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'src/list')

diff --git a/src/list/operation/basic.h b/src/list/operation/basic.h
index dbd080e..586cf2f 100644
--- a/src/list/operation/basic.h
+++ b/src/list/operation/basic.h
@@ -2,7 +2,6 @@
 #define TYPEASVALUE_SRC_LIST_OPERATION_BASIC_H_
 
 #include "operation/math.h"
-#include "conditional/if.h"
 
 namespace tav {
 
@@ -24,14 +23,10 @@ template <
 	typename Cons
 >
 struct Nth {
-	typedef If<
-		equal_value<Index, Size<0>>::value,
-		Head<Cons>,
-		typename Nth<
-			Substract<Index, Size<1>>,
-			Tail<Cons>
-		>::type
-	> type;
+	typedef typename Nth<
+		Substract<Index, Size<1>>,
+		Tail<Cons>
+	>::type type;
 };
 
 template <typename Index>
@@ -39,6 +34,11 @@ struct Nth<Index, void> {
 	typedef void type;
 };
 
+template <typename Cons>
+struct Nth<Size<0>, Cons> {
+	typedef Head<Cons> type;
+};
+
 template <
 	typename Count,
 	typename Current
-- 
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