Top Answers

1. Unit Testing of private methods in Xcode
   89 votes
2. How to copy all properties of an object to another object, in Python?
   81 votes
3. Observing an NSMutableArray for insertion/removal
   79 votes
4. throwing an exception in objective-c/cocoa
   62 votes
5. Sending a message to nil in Objective-C
   51 votes