mttrb questions

mttrb answers

• How do I store a password in Cocoa preferences?
• How to insert a NSString into a NSMutableString?
• What is the constant ARDUINO for? it used to be 22 but is now 100
• stringValue of NSDictionary objectForKey runtime error
• Cocoa apis reporting incorrect values for free space, what should I use?
• Can the messages sent to an object in Objective-C be monitored or printed out? [duplicate]
• How can I convert NSMutableArray into NSString?
• How to sort numbers in NSArray?
• What does the syntax of the ivar structure _tableFlags in UITableView.h mean?
• call a function using thread in xcode