How to transform from RACSignal(the Objective-C version) to Signal (the Swift version)

Question

e.g. How to convert cell.rac_prepareForReuseSignal to a Signal?

levelSignal
|> takeUntil( doSomeThingTo(cell.rac_prepareForReuseSignal) )
|> observe(next: { level in
    ...
    })

Answer 1

Why do you to transform it to Signal? Signal is hot, already subscribed, while RACSignal is usually cold and only ready to subscribe.

You might rather transform it to the SignalProducer, so use toSignalProducer method.

Here is official documentation about these transformations