arrays - 在swift 3中对数组数组进行排序

Question

var myArray: [[String]] =
[
    ["1", "picture1.png", "John", "Smith"],
    ["2", "picture2.png", "Mike", "Rutherford"],
]

如何在第一项上对 myArray 进行排序？第二项？上升 ？下降？

非常感谢

Answer 1

我建议您创建一个struct 或class 来将这些相关数据打包在一起:

struct Person {
    let id: Int
    let picture: String // This should probably be a URL, NSImage or UIImage
    let firstName: String
    let lastName: String
}

然后用正确的类型定义你的实例(例如 id 是一个 Int，而不是一个 的 String 表示诠释。

let people = [
    Person(
        id: 1,
        picture: "picture1.png",
        firstName: "John",
        lastName: "Smith"
    ),
    Person(
        id: 2,
        picture: "picture2.png",
        firstName: "Mike",
        lastName: "Rutherford"
    ),
]

从那里，您可以按照自己喜欢的方式对其进行排序:

people.sorted{ $0.id < $1.id }
people.sorted{ $0.id > $1.id }
people.sorted{ $0.picture < $1.picture }
people.sorted{ $0.picture > $1.picture }
people.sorted{ $0.firstName < $1.firstName }
people.sorted{ $0.firstName > $1.firstName }
people.sorted{ $0.lastName < $1.lastName }
people.sorted{ $0.lastName > $1.lastName }