排序不同对象的数组

Question

myArray = [cat, red ,dog, blue, horse, yellow tiger, green ]

如何对这个数组进行排序，以便首先显示颜色，然后是这样的动物：

myArray = [red, blue, yellow,  green, cat,  dog, horse, tiger]

Answer 1

您可以使用带有枚举的struct数组来区分自定义类型优先级，而不是String数组，如下所示：

enum MyType: Int {
    case color, animal // Prioritize your custom type here, in this example color comes first, than animal
}

struct MyData {
    let type: MyType
    let text: String
}

使用自定义类型数据排序数组：

var array: [MyData] = [
    MyData(type: .animal, text: "cat"),
    MyData(type: .color, text: "red"),
    MyData(type: .animal, text: "dog"),
    MyData(type: .color, text: "blue"),
    MyData(type: .animal, text: "horse"),
    MyData(type: .color, text: "yellow"),
    MyData(type: .animal, text: "tiger"),
    MyData(type: .color, text: "green"),
]
array.sort { $0.type.rawValue < $1.type.rawValue }

输出：

print(data.map{ $0.text })
// ["red", "blue", "yellow", "green", "cat", "dog", "horse", "tiger"]