如何在swift中获取数组中字典的值

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"]]

我想为每个键获取数组中的值如何在swift中获取它？

Answer 1

编辑：尝试这样的事情，

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)")

上面是如何在swift中获取字典的值，如果你想得到字典的所有值的连接数组（*只有值），尝试类似下面的内容。

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

值数组：[“玫瑰”，“莲花”，“茉莉花”，“番茄”，“马铃薯”，“辣椒”，“芒果”，“苹果”，“香蕉”]

Answer 2

2年半没有人提到map？

好吧，抛开Dictionary有一个property values，它会做你要求的，你可以这样做：

let values = dict.map { $0.value }

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

尝试：

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

println(a[0])//mango

println(a[1])//apple

Answer 6

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