diff --git a/ndef/types.go b/ndef/types.go
index dbac06d..3e517f7 100644
--- a/ndef/types.go
+++ b/ndef/types.go
@@ -44,3 +44,16 @@ type SortedType interface {
 type ScalarType interface {
 	Int | Uint | Float | ~string | ~bool
 }
+
+type ArgInt []int
+
+// Get int by index from int slice
+func (a ArgInt) Get(i int, args ...int) (r int) {
+	if i >= 0 && i < len(a) {
+		r = a[i]
+	}
+	if len(args) > 0 {
+		r = args[0]
+	}
+	return
+}