I think the Object Oriented (OO) principle of Don't Repeat Yourself (DRY) is often misunderstood. In particular, the word "repeat" is troublesome. It has nothing to do with minimizing the amount of code you write. It is also not about merging similar methods together into a super-method. The DRY principle is about preserving a single source of truth in a system. When a there are multiple sources of truth in a system we have to write more code to manually keep all the truths in sync with each ...
