Initial commit

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/EnumerableExtensions.cs

@@ -0,0 +1,23 @@
+#if UNITY_EDITOR
+using System;
+using System.Collections.Generic;
+
+namespace UnityEngine.InputSystem.Editor
+{
+    internal static class EnumerableExtensions
+    {
+        public static void ForEach<T>(this IEnumerable<T> enumerable, Action<T, int> action)
+        {
+            int index = 0;
+            foreach (var item in enumerable)
+                action(item, index++);
+        }
+
+        public static string Join<T>(this IEnumerable<T> enumerable, string separator)
+        {
+            return string.Join(separator, enumerable);
+        }
+    }
+}
+
+#endif