Sorted:

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

c++ operator overloading & polymorphism-Collection of common programming errors

problem about dynamicresource-Collection of common programming errors

What exactly is a source filter?-Collection of common programming errors

Concept of C# polymorphism-Collection of common programming errors

problem about markup-extensions-Collection of common programming errors

Breakpoints Don't Match Code Lines!-Collection of common programming errors