发布者
let publisher = Just("Hello, Combine!")
let publisher = Publishers.Sequence(sequence: [1, 2, 3, 4, 5])
let publisher = Publishers.Timer(every: .seconds(1), tolerance: .milliseconds(100), scheduler: RunLoop.main, options: nil)
let subject = PassthroughSubject<String, Never>() subject.send("New message")
let subject = CurrentValueSubject<Int, Never>(0) subject.send(1)
let publisher = Future<String, Error> { promise in // 进行异步操作 promise(.success("Async Result")) }
let publisher = NotificationCenter.default.publisher(for: .NSWorkspaceDidWakeNotification)
let publisher = URLSession.shared.dataTaskPublisher(for: URL(string: "https://example.com")!)
let publisher1 = Just(1) let publisher2 = Just(2) let combined = Publishers.CombineLatest(publisher1, publisher2)
let publisher1 = Just(1) let publisher2 = Just(2) let merged = Publishers.Merge(publisher1, publisher2)
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