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What is the difference between Dependency Injection and Factory Pattern?

An example of an AI chatbot conversation about Dependency Injection and Factory Pattern in software design.

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You

What is the difference between Dependency Injection and Factory Pattern?

MagicBuddy
MagicBuddy

Dependency Injection (DI) is a design pattern that allows a class to receive its dependencies from an external source, while the Factory Pattern is used to create objects without specifying the exact class of object that will be created.

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You

Can you give me an example of each?

MagicBuddy
MagicBuddy

Sure! In Dependency Injection, you might have a class that requires a service, and you inject that service through the constructor. In the Factory Pattern, you would have a factory class that creates instances of different classes based on input parameters.

😀
You

When should I use Dependency Injection over Factory Pattern?

MagicBuddy
MagicBuddy

Use Dependency Injection when you want to decouple your code and make it easier to test. Use the Factory Pattern when you need to manage the creation of complex objects.

😀
You

Are there any downsides to using these patterns?

MagicBuddy
MagicBuddy

Yes, Dependency Injection can add complexity to your codebase, while the Factory Pattern can lead to a proliferation of factory classes if not managed properly.

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