ios - 在 Swift 中访问深度嵌套的字典和数组值

Question

我有一组 super 嵌套的字典和数组

var lines = ["set0":["lines":["Line one","Line two"],"pickone": ["set1":"Apples","set2":"Oranges"]],"set1":["lines":["Line one","Line two"],"pickone":["set3":"Bananas","set4":"Grapefruits"]]]

我有两个问题:

1. 有没有办法让那些嵌套字典的结构更具可读性

2. 如何访问嵌套数组的值

例如，在 Playground 中，我正在尝试以下代码:

lines["set0"]!["lines"]

但我根本没有得到任何结果。

Answer 1

关于使其可读性的尝试:

var lines = [
    "set0":[
        "lines":[
            "Line one",
            "Line two"
        ],
        "pickone":[
            "set1":"Apples",
            "set2":"Oranges"
        ]
    ],
    "set1":[
        "lines":[
            "Line one",
            "Line two"
        ],
        "pickone":[
            "set3":"Bananas",
            "set4":"Grapefruits"
        ]
    ]
]

至于你的台词:

lines["set0"]!["lines"]

我可以确认它正在运行。也许你应该给 playground 一些时间来显示结果。或者，您可能忘记了:

import Foundation