Swift 3排序jsonArray[重复]

Question

请你能告诉我如何排序（降序，升序）多个数组的"BonusCard"在"bonusCardsArray"的基础上，其"当前点"值。

//Array to sort according to "currentPoints" 
var bonusCardsArray = [BonusCard]()

//basis class
class BonusCard {

  var companyName             : String
  var bonusCardDescription    : String
  var currentPoints           : Int
  var bonusCardType           : Int


  init(companyName: String, bonusCardDescription: String,    
  currentPoints: Int, bonusCardType: Int) {

      self.companyName = companyName
      self.bonusCardDescription = bonusCardDescription
      self.currentPoints = currentPoints
      self.bonusCardType = bonusCardType
  }
}

Answer 1

您应该编写以下代码。

>

下降

BonusCardsArray.sorted（{0美元

为了提升

BonusCardsArray.sorted（{0美元

Answer 2

要就地排序（按w.r.t.升序排列到currentPoints属性），请使用sort（by:）方法

bonusCardsArray.sort { $0.currentPoints < $1.currentPoints }

或者，创建一个新数组；原始版本的排序版本，使用排序（按：）方法

let sortedfBonusCardsArray = bonusCardsArray
    .sorted { $0.currentPoints < $1.currentPoints }