It’s a 25-year-old principle of object-oriented (OO) design that you shouldn’t expose an object’s implementation to any other classes in the program. The program is unnecessarily difficult to maintain ...

I didn’t intend to start an “is evil” series, but several readers asked me to explain why I mentioned that you should avoid get/set methods in last month’s column, “Why extends Is Evil.” Though getter ...

This article is excerpted from Rails for Java Developers, by Stuart Halloway and Justin Gehtland, with permission of The Pragmatic Programmers. All rights reserved ...