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Many developers start with variables. They use strings for names and decimals for prices. This works for small apps.
Systems grow. You get dozens of variables. Now you face a new problem. You must model reality.
Classes, Enums, and Records are your tools. Software represents real world concepts. Poor representations cause bad systems.
These tools provide:
- Domain modeling
- Type safety
- Business rules
Senior developers design data structures. They spend less time on algorithms. Good models stop bugs.
A class groups related info. Instead of separate variables, you have one Product object.
Classes do more than store data. They define behavior. Use properties for control. Use computed properties to keep data consistent. Store facts. Calculate the rest.
Enums stop mistakes. A string allows typos. An enum forces a valid choice. The compiler finds the error before the user does.
Records handle stable facts. Use them for data without change. This reduces side effects and bugs.
The goal is representation. Beginners ask how to write a class. Pros ask what business concept they are modeling.
Good models create clarity. Clarity helps you scale.
Classes model change. Enums model business rules. Records model stable facts.
Engineering is building reliable representations of reality.
Optional learning community: https://t.me/GyaanSetuAi