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[Fix] Update key generation for adding handlers

9

Previous strategy was failing with newer swift versions, this is the same issue as #11. **[Edit]** ~~It seems that `Dictionary.keys` is somehow not atomic.~~ This is not true, see below...

Daniel1of1

Add a function of type: ```swift func combine(_ ra: Receiver, _ rb: Receiver) -> Receiver ``` Discussion points: - Whether it is necessary 😊 - should it be a free...

Daniel1of1

test_MultipleListeners() failing with Xcode 10.1

2

Hey, I discovered an issue (probably due to iOS 12/Swift 4.2/Xcode 10) that breaks the ability to have multiple listeners. Basically, only the first listener seems to receive the broadcasts....

kevincador

Nested observer

2

In this situation: ```swift receiver.listen { _ in receiver.listen { _ in print("foo bar") } } ``` `Receiver` will deadlock, if I am not mistaken because of `os_unfair_lock_t`. Any hints/suggestions...

RuiAAPeres