Implemented Scheme like `Concatenate` in terms of `Fold` and `Append`

* added appropriate test case

1 files changed, 18 insertions, 0 deletions

diff --git a/src/list/operation/concatenate.h b/src/list/operation/concatenate.h
new file mode 100644
index 0000000..944470b
--- /dev/null
+++ b/src/list/operation/concatenate.h
@@ -0,0 +1,18 @@
+#ifndef TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_
+#define TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_
+
+#include "append.h"
+#include "higher/fold.h"
+
+namespace tav {
+
+template <typename ListOfLists>
+using Concatenate = Fold<
+	Append,
+	void,
+	ListOfLists
+>;
+
+}
+
+#endif // TYPEASVALUE_SRC_LIST_OPERATION_CONCATENATE_H_