How exactly does dependency injection reduce coupling?

Posted by dotnetdev on Stack Overflow See other posts from Stack Overflow or by dotnetdev
Published on 2010-12-27T21:27:08Z Indexed on 2010/12/27 21:54 UTC
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Hi,

I've done plenty of reading on Dependency Injection, but I have no idea, how does it actually reduce coupling?

The analogy I have of DI is that all components are registered with a container, so theyre are like in a treasure chest. To get a component, you obviously register it first, but then you would have to interrogate the treasure chest (which is like a layer of indirection). Is this the right analogy? It doesn't make obvious how the "injection" happens, though (how would that fit in with this analogy?).

Thanks

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