如何将动态值附加到 Swift 语言中的 GET URL?

How to append dynamic values to GET URL in Swift language?

我是新手 Swift 我有一个简单的问题

我正在通过以下方式发送 GET 请求

loader!.getDataFromRequest(request: NSURLRequest(URL: NSURL(string: "http://......../GetAreaOfOperation?lastCityID=0&batchSize=200")!), dataIndex: -1)

现在我要发送

lastCityID = city   // city is an integer which is dynamic   
// instead of lastCityID = 0

请帮帮我。

lastCityID = city
loader!.getDataFromRequest(request: NSURLRequest(URL: NSURL(string: "http://......../GetAreaOfOperation?lastCityID=\(lastCityID)&batchSize=200")!), dataIndex: -1)