diff --git a/listhead.go b/listhead.go
index d192eb8..3a6b975 100644
--- a/listhead.go
+++ b/listhead.go
@@ -74,6 +74,16 @@ func (this *ListHead) Next() *ListHead {
 	return this.next
 }
 
+func (this *ListHead) Size() int32 {
+	num := int32(0)
+	this.ForEach_r(
+		func (data interface{}) bool  {
+			num++
+			return true
+		})
+	return num
+}
+
 func (this *ListHead) ForEachFrom(from *ListHead,
 	cb ListHead_Foreach_Func) {
 	for pos := from; pos != this; pos = pos.next {