S.P. questions

S.P. answers

• Need to implement timeout mechanism for UIRefreshControl.
• black background when overriding drawRect in UIScrollView
• Why can't I call Collections.sort() on my ArrayList<T>?
• Equivalent of C++ map.lower_bound in Java
• iOS 6 Xcode 4.5 unsupported architecture armv7s
• Can we do Quick sort with n logn worst case complexity?