If you've been developing software for any significant lenght of time, chances are you have compiled(for want of a better word) a repository of helper functions that have, over time, become valuable to you as you make your way through various applications...
Recently I was challenged by a colleague who asked some very basic questions relating to object orient programming. I know these concepts very well, but sometimes you have to stop and think twice about them, especially if most often than not, you do not...