Question

我有这样的字典

var dict : [String : Array<String>] = ["Fruits" : ["Mango", "Apple", "Banana"],"Flowers" : ["Rose", "Lotus","Jasmine"],"Vegetables" : ["Tomato", "Potato","Chilli"]]

我想在每个键的数组中获取值如何在swift中获取它？

Answer 1

2年半，没有人提到timeout？

好的，请假设map有一个property values可以做你想要的，你可以这样做：

Dictionary

Answer 2

尝试：

var a:Array = dict["Fruits"]! ;

println(a[0])//mango

println(a[1])//apple

Answer 3

试试这个：

for (key, value) in dict {
    println("key=\(key), value=\(value)")
}

Answer 4

尝试获取值，如下面的代码

let fruits = dict["Fruits"]
let flowers = dict["Flowers"]
let vegetables = dict["Vegetables"]

Answer 5

for val in dict.values {
    print("Value -> \(val)")
}

Answer 6

编辑：试试这样的事情，

var dict : [String : Array<String>] = [
                                        "Fruits" : ["Mango", "Apple", "Banana"],
                                        "Flowers" : ["Rose", "Lotus","Jasmine"],
                                        "Vegetables" : ["Tomato", "Potato","Chilli"]
                                      ]


var myArray : Array<String> = []
// You can access the dictionary(dict) by the keys(Flowers, Flowers, Vegetables)
// Here I'm appending the array(myArray), by the accessed values.
myArray += dict["Fruits"]!
myArray += dict["Vegetables"]!

print("myArray \(myArray)")

以上是如何在swift中获取dictionay的值，如果你想获得所有值的连续数组字典（*仅限值），尝试下面的内容。

print("values array : \(dict.map{$0.value}.flatMap{$0})")

值数组：[＆＃34; Rose＆＃34;，＆＃34; Lotus＆＃34;，＆＃34; Jasmine＆＃34;，＆＃34; Tomato＆＃34;，＆＃34; Potato＆＃34 ;，＆＃34; Chilli＆＃34;，＆＃34; Mango＆＃34;，＆＃34; Apple＆＃34;，＆＃34; Banana＆＃34;]

如何在swift中获取数组中字典的值

6 个答案: