Barjavel questions

• Close App A when App B closes: Mac OS X 10.7.3
• CGRectMake alternative
• Is there a way to represent an enum class in Visio 2007?
• Is it possible to show that a method/operation returns and array of objects (rather than just a single object) in Visio 2007?
• NSOperationQueue serial FIFO queue
• How to perform binary search on NSArray?
• fopen() returning a NULL pointer, but the file definitely exists

Barjavel answers