swift - swift 根据对象的参数对对象进行排序

Question

我有数组对象，我想根据其参数对对象数组进行排序。

class User {
    var firstName, lastName, userName: String?
    var id: UUID? 
}

我有 userObject 数组。我想根据用户的 userName 对用户进行排序，并以适当的顺序返回 userObjects 的数组。

userArray = [(Shyam, M, ShayamM, 1),(Amar, S, AmarS, 3)),(Prema, A, PremaA, 2))] userArray = userArray?.sorted(by: {$0.name! < $1.name!})

我想要这样的输出:userArray = [(Amar, S, AmarS, 3)),(Prema, A, PremaA, 2)),(Shyam, M, ShayamM, 1)]

Answer 1

你可以这样做:

    var userArray = [User("Shyam", "M", "ShayamM", 1), User("Amar", "S", "AmarS", 3), User("Prema", "A", "PremaA", 2)]
    userArray.sort { (user1, user2) -> Bool in
        if let username1 = user1.userName, let username2 = user2.userName
        {
            return username1 < username2
        }
        return false
    }