10 things you forgot to do to your code

You’ve pushed the code through all of the tests and they came back green. The continuous integration pipeline ran all of the way through. All of the check boxes on the feature list are checked. All of the Post-it notes have moved to the completed part of the wall. Phew.

It’s tempting to call the code finished and head off on vacation. You’ve earned it. The team has earned it. Let the code do its thing for a bit. Isn’t that the whole reason we wrote it? To throw it over the wall where it could just hum along and do its thing?

Alas, the days of being complacent and sitting still are over. Nothing is ever finished these days. Just because you’ve squeezed out the bugs and delivered a working program doesn’t mean that you should relax. There are dozens of things you can still do to improve your code. Some are the mark of the good citizen who cleans up for the next team to come along. Some are opportunities for growth and capturing new markets. Some are the start of a new journey.

Here are 16 things to do when you come back from a bit of relaxation and recovery. 


The tool called a lint or a linter is like a code review robot that enforces hundreds of semantic rules. Perhaps thousands of them. Some were written by obsessive scolds from the programming sect that counts blank characters and berates those who use too many or too few. Some were written by serious people who have flagged subtle semantic patterns that can lead to security flaws later. Your programming team has probably chosen a collection of linters and now is the time to run them.


Don Knuth once said, “Premature optimization is the root of all evil,” because it’s silly to spend time improving the parts of the code that only run occasionally. Now that you’re finished coding, it’s time to fire up a profiler and look for those hot spots. It’s often the case that 10 percent of the code runs 90 percent of the time. Sometimes there are tight inner loops that absorb 99 percent of the cycles. If you can flag them now, a few tweaks can really pay off.

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