I can put an implementation within the following OO elements:
- Case Class
Also so far I know:
- Object is singleton, and class isn’t. So if we want one instance we use object.
- Use the combination of trait and class if I want to use the trait as an interface.
- Can use companion object for a class, to hold the values/data models.
Outside these three, I think there are a lot more to look at. Is there any “set of rules” I need to be aware of solely based on the OO principles in Scala?