97 Things Every X Should Know

If we accept that code is design — a creative process rather than a mechanical one — the software crisis is explained. We now have a design crisis

Great designs are produced by great designers dedicating themselves to the mastery of their craft. Code is no different.

Comment what the code cannot say, not simply what it does not say

Don't be afraid of your code. Who cares if something gets temporarily broken while you move things around? A paralyzing fear of change is what got your project into this state to begin with. Investing the time to refactor will pay for itself several times over the life cycle of your project.

If you instead explore new languages to expand your mind and get fresh ideas on how you can solve things in different ways, you will find that the code you write in your trusty old language gets more beautiful for every new language you've learned

Golden Rule of API Design fits in: It's not enough to write tests for an API you develop; you have to write unit tests for code that uses your API. When you do, you learn first-hand the hurdles that your users will have to overcome when they try to test their code independently.

I closed down my IDE. I'd become so used to working on a big project within a big product I'd started to think that was what I should be doing. A general purpose computer can do little tasks too.

Think of every line of code you write as a message for someone in the future — someone who might be your younger brother.

Write code as if you had to support it for the rest of your life

There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies and the other is to make it so complicated that there are no obvious deficiencies