Swift Array - use "Contains" of type AnyObject

var a = [1, 2, 3] as NSArray //NSArray is not a Struct
var b = a
a === b //true

var a = [1, 2, 3]
var b = a
a == b //true

class ProductData: NSObject {
    var title = ""

    private init(dict: [String : AnyObject]){
        if let t = dict["title"] as? String { self.title = t }
        super.init()
    }

    class func getTheData(fromJSONPath JSONPath: String) -> [ProductData] {

        do {
            // safely unwrap and typecast the values else return empty array
            guard let url = NSURL(string: JSONPath),
                let JSONData = NSData(contentsOfURL: url),
                let JSONArray = try NSJSONSerialization.JSONObjectWithData(JSONData, options: [])
                    as? [[String : AnyObject]] else { return [] }

            return JSONArray.map() { ProductData(dict: $0) }

        } catch {
            // this `error` variable is created by the `catch` mechanism
            print(error)
            // return empty array if unkown failure
            return []
        }

    }

}

let test = ProductData.getTheData(fromJSONPath: "http://localhost:5678/file/test.json")

NSKeyedArchiver.archiveRootObject(NSArray(array: contactArray),
    toFile: dataFilePath!)

var contactArray = [name.text!, address.text!, phone.text!]

var contactArray = [String]()

for element in [name.text, address.text, phone.text] where element != nil {
    array.append(element!)
}
NSKeyedArchiver.archiveRootObject(NSArray(array: contactArray),
    toFile: dataFilePath!)

dict["key"] = "value" as AnyObject