slowfei的专栏

//得到日历对象 NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];//选择获取的时间单元标识，这里可以根据年来对应时间组件获取的参数调整，可以看看下面的对应列表NSInteger unitFlags = NSYearCalendarUnit | NS

转载于：http://cocoawithlove.com/2009/05/variable-argument-lists-in-cocoa.htmlVariable argument lists in CocoaThis week I'll talk about methods that take variable numbers of arguments, also