The signal-to-noise ratio is a measure used in science and engineering that compares the level of the desired signal to the level of background noise.

Code lines shouldn’t be too long, and many of us use 80 columns as a (flexible) limit. But do you know why it is precisely 80, and not 60 or 120?

Good and clean code starts with proper names. It’s not easy to name every little thing in a concise and meaningful way, but it’s worth the effort.

Comments help readers to more easily understand code better by explaining our intentions, clarifying, or annotating it. But we tend to comment too much on the wrong things and too little on the right things.