private var data = [String: [[String: String]]]()
 
override func viewDidLoad() {
    super.viewDidLoad()
    let dict = ["Key": "Value"]
    data["Blah"] = [dict,dict]
}
 
@IBAction func buttonTap(sender: AnyObject) {
    let array = data["Blah"]
    let dict = array[0] //<---- error here
    println(dict["Key"])
}

基本上,我有一个字典,其值包含[String：String]字典数组.我把数据填入其中,但当我去访问数据时,我收到此错误：

Cannot subscript a value of type ‘[([String : String])]?’ with an
index of type ‘Int’

请让我知道我做错了什么.