从另一个CurrentValueSubject创建CurrentValueSubject

import Combine

// 创建两个CurrentValueSubject作为输入
let inputSubject1 = CurrentValueSubject<Int, Never>(0)
let inputSubject2 = CurrentValueSubject<Int, Never>(0)

// 使用combineLatest操作符创建一个新的CurrentValueSubject
let outputSubject = CurrentValueSubject<(Int, Int), Never>((0, 0))

// 订阅输入的CurrentValueSubject
let inputSubscription1 = inputSubject1.sink { value in
    outputSubject.value = (value, inputSubject2.value)
}

let inputSubscription2 = inputSubject2.sink { value in
    outputSubject.value = (inputSubject1.value, value)
}

// 订阅输出的CurrentValueSubject
let outputSubscription = outputSubject.sink { value in
    print("Output: \(value)")
}

// 修改输入的CurrentValueSubject的值
inputSubject1.send(1)
inputSubject2.send(2)