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-rw-r--r--src/list/list.h1
-rw-r--r--src/list/operation/concatenate.h18
2 files changed, 19 insertions, 0 deletions
diff --git a/src/list/list.h b/src/list/list.h
index b89e1ca..5c67872 100644
--- a/src/list/list.h
+++ b/src/list/list.h
@@ -31,5 +31,6 @@ using Tail = Cdr<Cons>;
#include "operation/basic.h"
#include "operation/append.h"
+#include "operation/concatenate.h"
#endif // TYPEASVALUE_SRC_LIST_LIST_H_
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_