查找字典中的兩個陣列重複鍵更新與新的磁盤陣列字典

Question

舊陣列字典我想更新與新的字典保存的字典。如果沒有值，則需要將新值附加到字典中。還用字典的新值更新舊的現有值。字典

老救陣，我有：詞典

var savedDict = [ 
      ["id":"1","pic":"Alice.png","name":"Alice Smith","position":"Nurse"], 
      ["id":"2","pic":"brad.png","name":"Brad Smith MD","position":"Primary Doctor"], 
      ["id":"12","pic":"bob.png","name":"Bob Smith PhD","position":"Hospital Coordinator"], 
      ] 

新的下載數組：

let newDict = [ 
      ["id":"1","pic":"alice.png","name":"Alice Smith","position":"Nurse"], 
      ["id":"2","pic":"brad.png","name":"Brad Smith MD","position":"Primary Doctor"], 
      ["id":"3","pic":"user.png","name":"Dr. Quam","position":"Immunologist"], 
      ["id":"4","pic":"jennifer.jpg","name":"Jennifer Johnson","position":"Case Manager"], 
      ["id":"5","pic":"user.png","name":"John Banks MD","position":"Cardiologist"], 
      ["id":"6","pic":"tammie.png","name":"Tammie Summers","position":"Case Manager"] 
      ] 

我想：
1.update 「Alice.png」 到「愛麗絲。 png「爲」id「= 1，
2.ignore」id「= 2，因爲兩個字符串都是相同的，
3.將newDict中的所有新項添加到savedDict

最終字典應該是：

upToDateDict = [ 
      ["id":"1","pic":"alice.png","name":"Alice Smith","position":"Nurse"], 
      ["id":"2","pic":"brad.png","name":"Brad Smith MD","position":"Primary Doctor"], 
      ["id":"12","pic":"bob.png","name":"Bob Smith PhD","position":"Hospital Coordinator"], 
      ["id":"3","pic":"user.png","name":"Dr. Quam","position":"Immunologist"], 
      ["id":"4","pic":"jennifer.jpg","name":"Jennifer Johnson","position":"Case Manager"], 
      ["id":"5","pic":"user.png","name":"John Banks MD","position":"Cardiologist"], 
      ["id":"6","pic":"tammie.png","name":"Tammie Summers","position":"Case Manager"] 
      ] 

我想這個至今：

import UIKit 
import Foundation 

func arrayContains(array:[[String:String]], value:[String:String]) -> Bool { 
    for item in array { 
     if item == value { 
      return true 
     } 
    } 
    return false 
} 

var upToDateDict = savedDict//Array<Dictionary<String,String>>() 

//Save all of the dictionaries from the 1st array (savedDict) that aren't in the 2nd array (newDict) 
for item in newDict { 
    if !arrayContains(array: savedDict, value: item) { 
     upToDateDict.append(item) 
    } 
} 

print(upToDateDict) 

//find duplicate keys and check if need to update saved dict with new dict 

let key = "id" 

for dict1 in savedDict { 
    if let value = dict1[key] { 
     for dict2 in newDict { 
      if dict2[key] == value { //if true duplicate "id" key's found 

       if dict1 != dict2 { //not duplicate for all keys, so update saved with new dictionary 

        print("found \(key):\(value) in both arrays") 
        print("dict1:\(dict1)") 
        print("dict2:\(dict2)") 

        savedDict[dict1] = dict2 //what I want to do but will not build 

       } else {}//all keys duplicate in dict1 and dict2 

      } 
     } 
    } 
} 

我只是想改寫這個字典，新的，所以我更新[ 「ID」： 「1」， 「PIC」： 「Alice.png」 ......爲[ 「ID」： 「1」， 「PIC」： 「alice.png」 ......但是這是行不通的：

savedDict[dict1] = dict2 

Answer 1

你應該創建

class Employee { 
    var id: String 
    var pic: String 
    var name: String 
    var position: String 

    init(id: String, pic: String, name: String, position: String) { 
     self.id = id 
     self.pic = pic 
     self.name = name 
     self.position = position 
    } 
} 

那麼你將有

var oldEmployes: [Employee] = [Employee(id: "1", pic: "pic.png", name: "Name", position: "Position"), 
           Employee(id: "2", pic: "pic2.png", name: "Name2", position: "Position2")] 
var newEmployes: [Employee] = [Employee(id: "2", pic: "pic21.png", name: "Name21", position: "Position2"), 
           Employee(id: "3", pic: "pic3.png", name: "Name3", position: "Position3")] 

更新陣列像做（可以使用高級功能更加像樣，但是我覺得這種方式看起來清晰）

for employee in newEmployes { 
    var isNew = true 
    for oldEmployee in oldEmployes { 
      if oldEmployee.id == employee.id { 
       oldEmployee.name = employee.name 
       oldEmployee.pic = employee.pic 
       oldEmployee.position = employee.position 
       isNew = false 
      } 
    } 
    if isNew { 
     oldEmployes.append(employee) 
    } 
}