diff --git a/operand-list.go b/operand-list.go
index c7183d8..7bea937 100644
--- a/operand-list.go
+++ b/operand-list.go
@@ -46,6 +46,22 @@ func (ls *ListType) String() string {
 	return ls.ToString(0)
 }
 
+func newListA(listAny ...any) (list *ListType) {
+	return newList(listAny)
+}
+
+func newList(listAny []any) (list *ListType) {
+	if listAny != nil {
+		ls := make(ListType, len(listAny))
+		for i, item := range listAny {
+			ls[i] = item
+		}
+		list = &ls
+	}
+	return
+}
+
+
 // -------- list term
 func newListTermA(args ...*term) *term {
 	return newListTerm(args)