When should we call addDisposableTo(disposeBag) in RxSwift?

Question

We create a DisposeBag, and a Observable, subscribe the Observable and then addDisposableTo(disposeBag), I know when the

Answer 1

Dispose bags are used to return ARC like behavior to RX. When a DisposeBag is deallocated, it will call dispose on each of the added disposables.

It is used to dispose of old references that you pass in the closure and resources that are not needed anymore(and which were apparently not used): for example an open HTTP connection, a database connection or a cache.

So if we have any resources that can be left, you should call it.

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