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What is postal metaphor for encapsulation?

Here's a postal metaphor for encapsulation in programming:

Imagine you're sending a package through the mail.

* The package itself represents the data (or attributes) of an object. This could be anything: a book, a shirt, a letter, etc.

* The box the package is in represents the encapsulation. It protects the data from the outside world and hides the internal details. You don't need to know what's inside the box to ship it.

* The address on the box represents the methods (or functions) that interact with the object. These methods are the only way to access or modify the data inside. You can't just open the box and change the contents directly.

Here's how this relates to encapsulation in programming:

* Encapsulation protects data. Like a package in a box, the internal details of an object are hidden. This prevents accidental changes and makes the code more robust.

* Encapsulation provides a clear interface. Just like the address on the box tells you what to do with the package, methods define how you interact with an object.

* Encapsulation makes code easier to maintain. You can change the internal details of the object (like the contents of the box) without breaking other parts of the code.

In summary: Encapsulation is like putting your data in a box and only providing an address for access. It keeps things tidy, organized, and safe.

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