Ryan Kearney

I found a nice long list of excellent ways to write unmaintainable code, or code that will be impossible for anyone else to be able to read. Is also very likely that when you’re done, you won’t be able to know what your own code is doing either. List taken from freeworld.thc.org which was made up of entries from mindprod.com. With that being said, here’s the list!

General Principles

Quidquid latine dictum sit, altum sonatur.
- Whatever is said in Latin sounds profound.

To foil the maintenance programmer, you have to understand how he thinks. He has your giant program. He has no time to read it all, much less understand it. He wants to rapidly find the place to make his change, make it and get out and have no unexpected side effects from the change.He views your code through a toilet paper tube. He can only see a tiny piece of your program at a time. You want to make sure he can never get at the big picture from doing that. You want to make it as hard as possible for him to find the code he is looking for. But even more important, you want to make it as awkward as possible for him to safely ignore anything.

Programmers are lulled into complacency by conventions. By every once in a while, by subtly violating convention, you force him to read every line of your code with a magnifying glass.

You might get the idea that every language feature makes code unmaintainable — not so, only if properly misused.
More…