Matthew Gillingham questions

Matthew Gillingham answers

• objective-C: simple question about copy/retain NSString
• setting multiple sort descriptors
• Remove MKMapView Annotations with a certain pinColor?
• Does iOS send notifications when the system changes the screen brightness?
• how to get rounded edges on UITableViewCell's in a manner that allows cell background color to be user selected? (but not using the GROUPED mode)
• Objective-C: @property declaration without implementation (@synthesize)
• Is a MainWindow.xib truly needed in iOS application?
• Best practices for drawing dynamic UITableView row height
• iOS UIWebView Javascript - insert data -receive callbacks?
• Are the HTTP status codes defined anywhere in the iOS SDK?