尝试获取给定范围的子数组

Question

当尝试获取当时给定范围的子数组时出现此错误。

Cannot subscript a value of type '[Info]' with an index of type 'CountableRange<Int>' .

我的代码是

信息模态

class Info : NSObject {
    var type : Type = .Unknown
    var data = ""

    init() {
        super.init()
    }
}

数组声明

var currentData : [Info] = []

在尝试这段代码时

let moreAnimals: [Info] = self.currentData[0..<5] //above error disply.

Answer 1

let currentData = [Info(), Info(), Info()]
let subarr0 = currentData[0..<2] // ArraySlice<Info>
let subarr1 = Array(currentData[0..<2]) // Array<Info>