cleaner code

Make your code as readable, code is for humans!

• Use long, descriptive names
• Divide the code into logical subroutines
• Keep it simple when possible - there are no points for complicated one liner solutions

The creation cycle

• Make it work
• Make it right
• Make it beautiful and fast

Spend a lot of time reading and understanding a complex piece of code you might be interacting with

• Jumping to code when you do not understand what's happening around will almost always result in an inefficient solution

Use debuggers extensively.

• Understand input fast: put a break point, play around with methods on your input
• Sandbox: Quickly implement a solution in the watch/console section instead of rerunning the whole program
• Debug: Understand the state of the program and fix it up

Write tests

• It's better to fail early and fix the problem than fail in production.
• Every time you refactor, change, or add to your code, your tests will make sure you did not regress.
• Add tests at every opportunity

Referene

Twitter thread by Ujjwal Chadha