旧阵列字典我想更新与新的字典保存的字典。如果没有值,则需要将新值附加到字典中。还用字典的新值更新旧的现有值。字典查找字典中的两个阵列重复键更新与新的磁盘阵列字典
老救阵,我有:词典
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"],
]
新的下载数组:
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“爱丽丝。 png“为”id“= 1,
2.ignore”id“= 2,因为两个字符串都是相同的,
3.将newDict中的所有新项添加到savedDict
最终字典应该是:
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"]
]
我想这个至今:
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
}
}
}
}
我只是想改写这个字典,新的,所以我更新[ “ID”: “1”, “PIC”: “Alice.png” ......为[ “ID”: “1”, “PIC”: “alice.png” ......但是这是行不通的:
savedDict[dict1] = dict2
你应该创建自定义'类'而不是像这样的字典。之后,一切都会容易得多。 – JuicyFruit
自定义类是什么样的? – Brian
检查我的答案 – JuicyFruit