如何在Swift中的类型：[Int：[String]]的字典中访问特定值？

Question

我有这种类型的词典：

var emojiChoices  = [0 : ["","","","","","","",""], 1 : ["⚽️","","","","","‍♀️","",""]]

我想要一个其他元素来显示“0”键中包含的字符串。

感谢您的帮助。

Answer 1

您可以通过键访问字典中的项目：emojiChoices [key]。例如：

var emojiChoices  = [0 : ["","","","","","","",""], 1 : ["⚽️","","","","","‍♀️","",""]]
let result = emojiChoices[0]

对于随机密钥：

var emojiChoices  = [0 : ["","","","","","","",""],
                     1 : ["⚽️","","","","","‍♀️","",""]]

if let array = emojiChoices[0] {
    let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
    let randomEmoji = array[randomIndex]

    print(randomEmoji)
}