Sorted:

problem about itemrenderer-Collection of common programming errors

problem about addsubview-Collection of common programming errors

How to store a password?-Collection of common programming errors

How to write c function which invoke `super`'s implementation in Objective-C?-Collection of common programming errors

Why can I access a derived private member function via a base class pointer to a derived object?-Collection of common programming errors

Should one stop loading UIView from xibs?-Collection of common programming errors

Application is crashing when running with instruments-Collection of common programming errors

problem about overriding-Collection of common programming errors

Pure Virtual Method Called-Collection of common programming errors

problem about ibaction-Collection of common programming errors