Referenssiluokkalähtöinen

Referenssiluokka is a term used in Finnish to describe a reference class. In the context of programming and object-oriented design, a reference class serves as a blueprint or template for creating objects. It defines the properties (attributes) and behaviors (methods) that objects of that class will possess. When an object is created from a reference class, it is referred to as an instance of that class.

The concept of a reference class is fundamental to object-oriented programming languages like Java, C++, and Python. It allows developers to organize code into reusable units, promoting modularity and maintainability. Instead of writing repetitive code for similar data structures and operations, developers can define a reference class once and then create multiple instances of it, each with its own unique state but sharing the same structure and behavior.

For example, in a software application that manages users, a `User` reference class could be defined. This class might have attributes like `username`, `email`, and `password`, and methods such as `login()` and `logout()`. Each individual user in the system would then be an instance of the `User` reference class, holding their specific username, email, and password. This approach simplifies the management of user data and ensures consistency across all user accounts.