"如何并行使用 Swift async\/await"

Question

Consider the code below:

class UserProfile
{
    private var img: UIImage? {
       didSet { /* update ui */ }
    }
    private var bio: String? {
       didSet { /* update ui */ }
    }

    private func loadImage() async -> UIImage? {
        // ... 
    }

    private func loadBio() async -> String? {
        // ...
    }

    public func loadData() async {
        async let img = loadImage()
        async let bio = loadBio()

        self.img = await img
        self.bio = await bio
    }
}

Answer 1

you could try something like this:

func loadData() async {
    await withTaskGroup(of: Void.self) { group in
        group.addTask { self.img = await loadImage() }
        group.addTask { self.bio = await loadBio() }
    }
}

Answer 2

我相信使用元组可以解决这个问题：

(self.img, self.bio) = await (img, bio)<\/code>

"

Answer 3

You can do it like this:

You can also see the swift documentation- https://docs.swift.org/swift-book/LanguageGuide/Concurrency.html#ID643