/*!
- * Ext JS Library 3.1.0
- * Copyright(c) 2006-2009 Ext JS, LLC
+ * Ext JS Library 3.1.1
+ * Copyright(c) 2006-2010 Ext JS, LLC
* licensing@extjs.com
* http://www.extjs.com/license
*/
* @return {Number} Value, if numeric, else defaultValue
*/
num : function(v, defaultValue){
- v = Number(Ext.isEmpty(v) || Ext.isBoolean(v) ? NaN : v);
+ v = Number(Ext.isEmpty(v) || Ext.isArray(v) || Ext.isBoolean(v) || (Ext.isString(v) && v.trim().length == 0) ? NaN : v);
return isNaN(v) ? defaultValue : v;
},
* @return {Number} The mean.
*/
mean : function(arr){
- return Ext.sum(arr) / arr.length;
+ return arr.length > 0 ? Ext.sum(arr) / arr.length : undefined;
},
/**