alt versions of isArray if available, isDate uses instanceof, clean u…

…p extend and close

src/common/utils.js

@@ -78,15 +78,14 @@ utils.typeName = function(val) {
 /**
  * Returns an indication of whether the argument is an array or not
  */
-utils.isArray = function(a) {
-    return utils.typeName(a) == 'Array';
-};
+utils.isArray = Array.isArray ||
+                function(a) {return utils.typeName(a) == 'Array';};
 
 /**
  * Returns an indication of whether the argument is a Date or not
  */
 utils.isDate = function(d) {
-    return utils.typeName(d) == 'Date';
+    return (d instanceof Date);
 };
 
 /**
@@ -120,17 +119,25 @@ utils.clone = function(obj) {
  * Returns a wrapped version of the function
  */
 utils.close = function(context, func, params) {
-    if (typeof params == 'undefined') {
-        return function() {
-            return func.apply(context, arguments);
-        };
-    } else {
-        return function() {
-            return func.apply(context, params);
-        };
-    }
+    return function() {
+        var args = params || arguments;
+        return func.apply(context, args);
+    };
 };
 
+//------------------------------------------------------------------------------
+function UUIDcreatePart(length) {
+    var uuidpart = "";
+    for (var i=0; i<length; i++) {
+        var uuidchar = parseInt((Math.random() * 256), 10).toString(16);
+        if (uuidchar.length == 1) {
+            uuidchar = "0" + uuidchar;
+        }
+        uuidpart += uuidchar;
+    }
+    return uuidpart;
+}
+
 /**
  * Create a UUID
  */
@@ -142,6 +149,7 @@ utils.createUUID = function() {
         UUIDcreatePart(6);
 };
 
+
 /**
  * Extends a child object from a parent object using classical inheritance
  * pattern.
@@ -151,6 +159,7 @@ utils.extend = (function() {
     var F = function() {};
     // extend Child from Parent
     return function(Child, Parent) {
+
         F.prototype = Parent.prototype;
         Child.prototype = new F();
         Child.__super__ = Parent.prototype;
@@ -170,16 +179,5 @@ utils.alert = function(msg) {
 };
 
 
-//------------------------------------------------------------------------------
-function UUIDcreatePart(length) {
-    var uuidpart = "";
-    for (var i=0; i<length; i++) {
-        var uuidchar = parseInt((Math.random() * 256), 10).toString(16);
-        if (uuidchar.length == 1) {
-            uuidchar = "0" + uuidchar;
-        }
-        uuidpart += uuidchar;
-    }
-    return uuidpart;
-}
+