Question

我有一个带有多个值的2D数组。

此数组上的一个字段称为group，让我们想象一下我的数组具有以下顺序：

private var myArray = [
   ArrayModel(
      id: 0,
      name: "Test",
      color: 0,
      img: "img.png",
      group = "myGroup"),
   ArrayModel(
      id: 1,
      name: "Test1",
      color: 0,
      img: "img.png",
      group: "myGroup"),
   ArrayModel(
      id: 2,
      name: "Test2",
      color = 0,
      img = "img.png",
      group = "myGroup3")
   ArrayModel(
      id: 3,
      name: "Test3",
      color: 0,
      img: "img.png",
      group: "myGroup2"),
   ArrayModel(
      id: 4
      name: "Test4"
      color: 0
      img: "img.png"
      group: "myGroup3")
]

阵列模型

class ArrayModel: Decodable {

var id: Int
var name: String
var color: Int
var img: String
var group: String

convenience init() {
    self.init()
    id = 0
    name = ""
    color = 0
    img = ""
    group = ""
}

init(id: Int, name: String, color: Int, img: String, group: String) {
    self.id = id
    self.name = name
    self.color = color
    self.img = img
    self.group = group
}

}

如何将myArray[2]移到myArray[1]中？

我想要的输出是：

let myArray = [
   ArrayModel(
      id: 0,
      name: "Test",
      color: 0,
      img: "img.png",
      group: "myGroup")
   ]
   [1] => same shema, but group => "myGroup"
   [2] => same shema, but group => "myGroup2"
   [3] => same shema, but group => "myGroup2"
   [4] => same shema, but group => "myGroup3"
]

我尝试过这个：

myArray.sorted(by: { $0.group < $1.group })

感谢您的帮助！

Answer 1

这可能有助于您按区分大小写进行排序，但是您的myArray应该是mutable。例如：var myArray

myArray = myArray.sorted(by: { $0.group.localizedCompare($1.group) == .orderedAscending})

Answer 2

尝试一下：

myArray.sort { $0.group < $1.group }

.sort(by: ...)不是您所需要的，因为您想修改 myArray（通过排序）。为此，您必须省略by:...。

有关更多信息，请参见this answer：）

Swift：使用相同的值对数组进行排序

阵列模型

我想要的输出是：

2 个答案: