在Swift Combine中如何使用combine latest或catch来检查错误？

import Combine

let publisher1 = PassthroughSubject<Int, Never>()
let publisher2 = PassthroughSubject<String, Never>()

let combined = publisher1.combineLatest(publisher2)

combined.sink { (value1, value2) in
    print("Combined value: \(value1), \(value2)")
}.store(in: &cancellables)

import Combine

let publisher = PassthroughSubject<Int, Error>()

let handled = publisher.catch { error -> AnyPublisher<Int, Never> in
    print("Error caught: \(error)")
    return Just(0).eraseToAnyPublisher()
}

handled.sink { value in
    print("Received value: \(value)")
}.store(in: &cancellables)

import Combine

let publisher1 = PassthroughSubject<Int, Error>()
let publisher2 = PassthroughSubject<String, Never>()

let handledPublisher1 = publisher1.catch { error -> AnyPublisher<Int, Never> in
    print("Error caught in publisher1: \(error)")
    return Just(0).eraseToAnyPublisher()
}

let combined = handledPublisher1.combineLatest(publisher2)

combined.sink { (value1, value2) in
    print("Combined value: \(value1), \(value2)")
}.store(in: &cancellables)