Refactoring: Improving the Design of Existing Code (Addison-Wesley Signature Series (Fowler))

by Martin Fowler

I have more code than I did when I started: 70 lines (not counting htmlStatement) as opposed to 44, mostly due to the extra wrapping involved in putting things in functions. If all else is equal, more code is bad—but rarely is all else equal. The extra code breaks up the logic into identifiable parts, separating the calculations of the statements from the layout. This modularity makes it easier for me to understand the parts of the code and how they fit together. Brevity is the soul of wit, but clarity is the soul of evolvable software. Adding this modularity allows to me to support the HTML version of the code without any duplication of the calculations.