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-rw-r--r--src/list/list.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/list/list.h b/src/list/list.h
index 47d0d2f..edd46e8 100644
--- a/src/list/list.h
+++ b/src/list/list.h
@@ -21,6 +21,31 @@ struct List<Head> {
typedef Cons<Head, void> type;
};
+template <typename Cons>
+using Head = Car<Cons>;
+
+template <typename Cons>
+using Tail = Cdr<Cons>;
+
+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_LIST_H_