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

If you are certain that the observable completes in a deterministic way - like using just in your example, or using take, takeUntil, etc. -, you may choose to not use the DisposeBag.

You might get a compiler warning, that actually explains this behavior well and how to work around it. But in general, it is more future-proof if you use DisposeBag anyway.

See: Unused disposable warning