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Is it a good practice to create a new (`Completable`) subscription on click?
I developed the habit lately to use a `PublishSubject` trigger and subscribe to it in `init`, but saw code again that uses the "subscription on tap" pattern and I'm wondering whether my pattern is overkill?

What's the `Completable` doing? The only that that comes to my mind is if you're doing something like making a network call or doing something expensive you may want to `debounce` the source. Otherwise I don't see why creating a new `Completable` on tap is a bad move.

depends if you want to control the paralelism somehow (switchmap, concatmap, debounce etc), if not, the it doesnt matter

well, yeah, I can't think of reasons not to create a new subscription each time

(aside from what you mentioned, but I don't need this)