Refactoring

Refactoring Pro-Tip: When I’m scanning, I’m not just reading fast, I’m feature-detecting, something the unconscious part of me is very good at doing, especially when the code helps. Part of the made, the making, and the maker as a guiding theme for me is the idea of "leaning in" to the strengths of my maker body and "leaning out" from its weaknesses. A trivial case: one reason TDD works so well for me is that the microtests give me a

Refactoring Pro-Tip: I optimize my code for scannability, readability, and writeability in that order. I won’t argue my case in detail, there’s a video if you’d rather watch me make it instead of reading it, and I’ll just sketch the case briefly here in the muse. http://geepawhill.org/optimizing-a-program-and-programming/ When I’m coding, I notice that I spend significantly more time scanning the code than I do reading it, and significantly more time reading the code than I do writing it. So when

Refactoring Pro-Tip: When I tackle a long method, the first thing I do is make my local variables maximally local. Consider this psuedo-code. It’s basic stuff, I’m betting virtually any geek can read it, but if not, lemme know. longMethod( int y ) { int x; x = 0; // … // IRRELEVANCY #0: 87 lines that neither read nor write x // … if( y == 17 ) { x = 1; } // … // IRRELEVANCY #1: 87

Refactoring Pro-Tip: I use naming, isolation, and noise-filtering as strategies to keep the coder’s intention at my fingertips. (I’m actually jonesing to write some geeky material in this series, but I’ve got one more of these pesky abstract philosophy things before I can get there.) First, a silly line from a silly movie, Airplane, which makes for a good Friday night comedy if you want that. (Paraphrased from memory.) "There’s a problem in the cockpit." "The cockpit? What is it?"

Refactoring Pro-Tip: The triggering events for refactoring vary, but the reason we refactor at all is the same each time, regardless of occasion: we refactor to enable change. The most obvious and direct occasion for a refactoring is this: I want to add new functionality and preserve old functionality, and it will be easier to add if I first schmoosh the old functionality around a little to make a little hole where the new stuff will fit. When I do