在swift中使用有序形式在字典中迭代对象

Question

我有一本字典，我想按照有序形式对它进行迭代，因为对象在字典中，但是在迭代之后它将以随机顺序迭代。请帮忙 提前致谢。

Answer 1

您不能对一个字典，而是可以将其键如下排序：

let myDict: [String:String] = ["car":"blue", "watch":"black", "bike": "red"] 

for key in myDict.keys.array.sorted(<) { 
    let value = myDict[key]! 
    println("\(key) = \(value)") 
} 


let dashboardItemsTuples : [(String , String)] = [("All Cards" , "cards"), ("Cards by Topic" , "cards_topic"), ("Lessons" , "lesson"), ("Audio" , "audio"), ("Video" ,"video") ,("Ebook" , "ebook") , ("Bookmarked Cards" , "bookmark_cards"), ("Upgrade","upgrade") , ("Downloads" ,"downloads")] 

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