A Swift dictionary array.
Describes how to create and call a dictionary array.
I like that different people use different ways of saying things like dictionary arrays, hashes, maps, etc.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import UIKit | |
| class ViewController: UIViewController { | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| // 初期化 | |
| var personDic: Dictionary<String, String> = ["height": "168", "wheight": "61", "like": "kabigon"] | |
| print(personDic) | |
| //["wheight": "61", "height": "168", "like": "kabigon"] | |
| // データ追加 | |
| personDic["age"] = "24" | |
| print(personDic) | |
| //["wheight": "61", "height": "168", "age": "24", "like": "kabigon"] | |
| // 任意のキーの値を取り出す | |
| //存在しないキーにアクセスすると、?? 以降が呼ばれる | |
| print(personDic["height"] ?? "200") //168 | |
| print(personDic["country"] ?? "japan") //japan | |
| //要素数 | |
| print(personDic.count) | |
| //4 | |
| // 辞書配列のKeyを取得する | |
| let personDickeys: Array = Array(personDic.keys) | |
| print(personDickeys) // | |
| ["wheight", "height", "age", "like"] | |
| // 辞書配列のValueを取得する | |
| let personDicValues: Array = Array(personDic.values) | |
| print(personDicValues) | |
| // ["61", "168", "24", "kabigon"] | |
| // 指定したkeyのデータを削除 | |
| personDic.removeValue(forKey: "height") | |
| print(personDic) | |
| // ["wheight": "61", "age": "24", "like": "kabigon"] | |
| } | |
| } |