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What does "separation of concerns" mean in programming?
separation of concerns is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A design principle that divides a system into distinct sections, each responsible for a specific concern. Each section handles one aspect (routing, business logic, data access) and does not mix in other responsibilities. Reduces coupling and improves maintainability.
Example
"Separation of concerns: the React component displays data only — fetching and transforming happens in a hook."
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