This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
I am trying to study Decorator pattern from Head First Design Patterns but i am unable to understand the basic concept,
can please someone point me towards a compact article or describe decorator pattern with an example.