Uchta uchta asinxron operatsiyani ketma-ket bajarishni qanday amalga oshirish mumkin?

iOS-da ketta ketma-ket bajarish uchun uchta asinxron operatsiyani bajarish uchun bir nechta yondashuvlar mavjud:

1. Yopishmalar (tugash handlerlari) — avvalgi operatsiya tugagach, keyingi operatsiyani chaqirish:

operation1 { result1 in
    operation2 { result2 in
        operation3 { result3 in
            // Barcha operatsiyalar yakunlandi
        }
    }
}

2. Combine — ketma-ket bajarish uchun Publisherlar zanjiridan foydalanish.

3. async/await (agar Swift versiyasida mavjud bo'lsa):

func performOperations() async {
    let result1 = await operation1()
    let result2 = await operation2()
    let result3 = await operation3()
    // Barcha operatsiyalar ketma-ket bajarildi
}

Tanlov Swift versiyasi va ilovaning arxitekturasiga bog'liq.