3 files changed, 51 insertions, 29 deletions
diff --git a/src/list/list.h b/src/list/list.h
index f21d0fc..b0fe407 100644
--- a/src/list/list.h
+++ b/src/list/list.h
@@ -27,35 +27,9 @@ using Head = Car<Cons>;
 template <typename Cons>
 using Tail = Cdr<Cons>;
 
-template <typename Cons>
-struct Length {
-	typedef Add<Size<1>, typename Length<Cdr<Cons>>::type> type;
-};
-
-template <>
-struct Length<void> {
-	typedef Size<0> type;
-};
-
-template <
-	typename Primary,
-	typename Secondary
->
-struct Concatenate {
-	typedef Cons<
-		Head<Primary>,
-		typename Concatenate<
-			Tail<Primary>,
-			Secondary
-		>::type
-	> type;
-};
-
-template <typename Secondary>
-struct Concatenate<void, Secondary> {
-	typedef Secondary type;
-};
-
 }
 
+#include "operation/basic.h"
+#include "operation/concatenate.h"
+
 #endif  // TYPEASVALUE_SRC_LIST_LIST_H_
diff --git a/src/list/operation/basic.h b/src/list/operation/basic.h
new file mode 100644
index 0000000..1e05a50
--- /dev/null
+++ b/src/list/operation/basic.h
@@ -0,0 +1,21 @@
+#ifndef TYPEASVALUE_SRC_LIST_OPERATION_BASIC_H_
+#define TYPEASVALUE_SRC_LIST_OPERATION_BASIC_H_
+
+namespace tav {
+
+template <typename Cons>
+struct Length {
+	typedef Add<
+		Size<1>,
+		typename Length<Tail<Cons>
+	>::type> type;
+};
+
+template <>
+struct Length<void> {
+	typedef Size<0> type;
+};
+
+}
+
+#endif  // TYPEASVALUE_SRC_LIST_OPERATION_BASIC_H_
diff --git a/src/list/operation/concatenate.h b/src/list/operation/concatenate.h
new file mode 100644
index 0000000..21eb1ee
--- /dev/null
+++ b/src/list/operation/concatenate.h
@@ -0,0 +1,27 @@
+#ifndef TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_
+#define TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_
+
+namespace tav {
+
+template <
+	typename Primary,
+	typename Secondary
+>
+struct Concatenate {
+	typedef Cons<
+		Head<Primary>,
+		typename Concatenate<
+			Tail<Primary>,
+			Secondary
+		>::type
+	> type;
+};
+
+template <typename Secondary>
+struct Concatenate<void, Secondary> {
+	typedef Secondary type;
+};
+
+}
+
+#endif  // TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_