Refactor means improving the existing code. To do that, we need to know, study if we don't, the language we are using, and the most efficient structures to be able to iterate. How to keep up with the study and not get lost in the thousand options? The idea is always to save time and effort, not reinvent the wheel.
How far depends on our hunger; one could dive into the rabbit hole and spend a lifetime there if that one doesn't want to see the sun anymore...or maybe one could use a framework for some projects. The big guns in my field (now) are React or Vue, but I tend to follow, duckling style, some of my colleagues, and it's incredible what one can do with the slimmest of the approaches.

ShortCast #

Episode 6 part 1

Episode 6 part 2

Episode 6 part 3