As far as I know there are these;
- Camel case = coolFileName
- Snake case = cool_file_name
- Kebab case = cool-file-name
- Pascal case = CoolFileName
- Dot notation = cool.file.name
- Flat case = coolfilename
- Screaming case = COOLFILENAME
Personally I prefer the kebab/dot conventions simply because they allow for easy “navigation” with (ctrl+arrow keys) between each part. What are your preferences when it comes to this? Did I miss any schemes?
Counterpoint: you have to use Shift a lot
For this reason, I use kebab case for directories. But because I agree underscores show spaces better, I use snake case for files.
He probably uses vi. A few hundred more shift-key presses won’t stand out.