The Don't Repeat Yourself (DRY) computer programming principle means, plainly ... Leave comments to explain objects, enhance variable definitions, and make functions easier to understand.
Computer science degrees unlock an array of career pathways. Today’s world is dependent on computers and computer science graduates are in very high demand.
There's a lot more to understanding how we measure programming language popularity than just looking at job listings. But for now, the message is clear: know your Python, SQL, and Java.