arrays - 如何使用变量将字符串追加到数组中？ swift

Question

我最近开始学习编码，但在将已转换为变量的字符串追加到数组中时遇到了问题。这是控制台说的:

无法将“[String]”类型的值转换为预期的参数类型“String”

这是我的代码:

var randomList = [String]()

func getList(inputList:Array<String>) -> Array<String>{

    randomList = inputList

    return randomList
}

func addItem(item: String...) -> String{

    randomList.append(item)

    return "\(item) was added"
}

func getItem(x: Int) -> String{
    return randomList[x]
}

Answer 1

只需将您的代码更改为:

func addItem(item: String...) -> String{

    randomList.append(contentsOf: item)

    return "\(item) was added"
}

然后你将能够像这样添加 1 个或多个字符串:

addItem(item: "Hello", "you", "there")

生成的数组将如下所示:

print(randomList)

["你好", "你", "那里"]

---

追加单个字符串:

let singleString = "hi"

addItem(item: singleString)

追加多个字符串:

let stringOne = "one"
let stringTwo = "two"
let stringThree = "three"

addItem(item: stringOne, stringTwo, stringThree)