在Swift中访问深度嵌套的字典和数组值

Question

我有一组超级嵌套的字典和数组

var lines = [“ set0”：[“ lines”：[“ Line one”，“ Line two”]，“ pickone”：[“ set1”：“ Apples”，“ set2”：“ Oranges”]]，“ set1 “：[” lines“：[”第一行“，”第二行“]，”皮卡“：[” set3“：”香蕉“，” set4“：”葡萄柚“]]

我有两个问题：

1. 有什么办法可以使这些嵌套词典的结构更易读

2. 我如何访问嵌套数组的值

例如，在操场上，我正在尝试以下代码：

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

但我什么都没有得到。

Answer 1

关于可读性，请尝试：

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

至于您的行：

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

我可以确认它正在运行。 也许您应该给操场一些时间来显示结果。 或者，也许您忘记了：

import Foundation

Answer 2

关于您的问题2：在代码稍作更改之后，您可以遍历它的所有分支。

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

    NSLog("original object:\(lines)")
    NSLog("all keys array:\(lines.allKeys)")


    if(lines.isKindOfClass(NSDictionary)){
        for key  in lines.allKeys{
            var innerDictionary:AnyObject! = lines.valueForKey(key as! NSString as String)
            //NSLog("inner dictionary:\(innerDictionary)")
            NSLog("depth2 keys array:\(innerDictionary.allKeys)")
            if(innerDictionary.isKindOfClass(NSDictionary)){

                for innerKey  in innerDictionary.allKeys{
                    var innerValue:AnyObject! = innerDictionary.valueForKey(innerKey as! NSString as String)

                    if(innerValue.isKindOfClass(NSDictionary)){
                        NSLog("Depth3 keys array:\(innerValue.allKeys)")
                        var mostInnerDicionary:AnyObject! = innerDictionary.valueForKey(innerKey as! NSString as String)
                        NSLog("most inner Dictionary:\(mostInnerDicionary)")
                        for mostInnerKey  in mostInnerDicionary.allKeys{
                        var mostInnerValue:AnyObject! = mostInnerDicionary.valueForKey(mostInnerKey as! NSString as String)
                            NSLog("most inner Value:\(mostInnerValue)")
                        }

                    }else{
                       NSLog("innerValue:\(innerValue)")
                    }

                }
            }
        }
    }

输出：运行并检查控制台日志中的输出