diff --git a/Array.cs b/Array.cs
index d294a38..d8910bc 100644
--- a/Array.cs
+++ b/Array.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Runtime.CompilerServices;
 using System.Collections.Generic;
+using System.Threading;
 namespace sharp.extensions
 {
 	public static class ArrayExtension
@@ -111,5 +112,12 @@ namespace sharp.extensions
 			return -1;
 		}
 
+		public static T[] Add<T>(this T[] a,T e)
+		{
+			T[] r = a.Extend<T>(a.Length + 1);
+			r[a.Length] = e;
+			return r;
+		}
+
 	}
 }