To give you a rough idea of what you should be looking for, think of when need to list a whole bunch of arguments for a function.
1. Keeping arguments in one line will make the change less visible:
2. Putting every argument in a new line will result in simpler GIT diffs:
(more on the last argument in the next point)
3. Adding a trailing comma & moving the closing brackets to a new line, will result in simpler git diffs when reordering.
This is language-specific. Not all programming languages allow trailing commas. Unfortunately none of the languages I’m using on a daily basis (Java & Kotlin) allow them. Let’s look at Python:
Unfortunately for languages without trailing commas this has no positive effect, but you can still use this pattern as a way of learning good habits. After all, Kotlin might get this feature in the future.