oop-examples/rust/Inheritance.md

Inheritance, Properties and Polymorphism

Rust does not allow extending classes. Instead the base class is stored as a field in the extending class. Polymorphism can then be achieved by passing the field instead of the whole object to a function. Although casting back to the advanced class or overriding functions is not possible.

Properties don't exist either, like in java. But replacing them with getters and setters is also discouraged. Quoting from a reddit post 'Expose behavior, not state'. That means you should present functions to outside viewers and not your plain data. An object should be able to do all its intended functions itself without having an outside observer read its data.