class Demo12 {
    var cancellables = Set< AnyCancellable>()
    
    func example(of: String) {
        let pub1 = PassthroughSubject<Int, Never>()
        let pub2 = PassthroughSubject<String, Never>()

        pub1
            .zip(pub2)
            .sink(receiveCompletion: { _ in print("Completed") },
                 receiveValue: { print("P1: \($0), P2: \($1)") })
            .store(in: &cancellables)

        pub1.send(1)
        pub1.send(2)

        pub2.send("a")
        pub2.send("b")

        pub1.send(3)

        pub2.send("c")
        pub2.send("d")
        
        pub1.send(4)

        pub1.send(completion: .finished)
        pub2.send(completion: .finished)
    }
}


let d = Demo12()
d.example(of: "good")

let numbersPub = PassthroughSubject<Int, Never>()
let lettersPub = PassthroughSubject<String, Never>()
let emojiPub = PassthroughSubject<String, Never>()

let cancellable = numbersPub
    .zip(lettersPub, emojiPub)
    .sink { print("\($0)") }


numbersPub.send(1)
numbersPub.send(2)
numbersPub.send(3)

lettersPub.send("A")

emojiPub.send("&#x1f600;")

lettersPub.send("B")

emojiPub.send("&#x1f970;")