Question

因此，想法是用户可以创建包含许多单词对的集合。

例如，他们创建了一个集合true，并在其中添加了一些单词和单词的翻译。然后他们创建了另一个名为false的集合，并添加了相应的键和值，等等：

nouns

如何在Swift中实现此功能？

这是否意味着每次用户添加新收藏集时我都必须创建新词典？

我尝试做类似的事情

colors

但是错误的数量不可数！正确的方法是什么？

更新：

userInput = {
    nouns: {
        "dog": "translation",
        "cat": "translation",
        "fish": "translation"
         //etc
    },
    colors: {
        "red": "translation",
        "green": "translation",
        "blue": "translation"
        //etc
    }
    //etc..
}

Answer 1

您需要

var main = [String: [String:String]]()

获取当前值

var collectionName = input.text! // nouns / colors
var inner:[String:String] = main[collectionName] ?? [:]

更改并重新设置

inner["dog"] = "translation"
main[collectionName] = inner

import UIKit

var main = [String: [String:String]]()  // global
class ViewController: UIViewController {

    @IBOutlet weak var collection: UITextField!
    @IBOutlet weak var input1: UITextField!
    @IBOutlet weak var input2: UITextField! 


    var collectionName = "nouns"

    override func viewDidLoad() {
        super.viewDidLoad()

        var collectionName = collection.text! // collection.text! will be "" as textfield is empty when the above function is called 
        var inner:[String:String] = main[collectionName] ?? [:] 
        inner[input1.text!] = input2.text!
        main[collectionName] = inner

    }

    @IBAction func click(_ sender: Any) {
        print(main[collectionName])
    }
}

OR

import UIKit

var main = [String: [String:String]]()  // global
class ViewController: UIViewController {

    @IBOutlet weak var collection: UITextField!
    @IBOutlet weak var input1: UITextField!
    @IBOutlet weak var input2: UITextField! 


    var collectionName = "nouns"

    override func viewDidLoad() {
        super.viewDidLoad()



    }

    @IBAction func save(_ sender: Any) { // save button action
        print("Before save : " , main)

        var collectionName = collection.text!  
        var inner:[String:String] = main[collectionName] ?? [:] 
        inner[input1.text!] = input2.text!
        main[collectionName] = inner

       print("After save : " , main)    
    }

}

根据用户输入在另一个键中创建包含键和值的字典

1 个答案: