[SOLVED - see poll instead] Courses that are helpful for every programmer

Question

I want to list general skills and common knowledge that is useful for every programmer. Maybe SoloLearn could implement a course for these topics??? Please vote for what you think is useful, and add more subjects.

Answer 1

Added a poll to Burey's SLPS about this:
https://code.sololearn.com/WQYApZt67VWn/?ref=app

Answer 2

Git, version controlling

Answer 3

Dependency injection

Answer 4

OOP

Answer 5

GUI programming

Answer 6

UML

Answer 7

Clean code

Answer 8

Regular expressions

Answer 9

Uhm... English 😆😆😆