新增fastList、注释完善

source/src/Utils/EqualityComparer.ts

@@ -0,0 +1,17 @@
+module es {
+    export class EqualityComparer<T> implements IEqualityComparer {
+        public static default<T>(){
+            return new EqualityComparer<T>();
+        }
+
+        protected constructor(){ }
+
+        public equals(x: T, y: T): boolean{
+            if (typeof x["equals"] == 'function'){
+                return x["equals"](y);
+            } else {
+                return x === y;
+            }
+        }
+    }
+}