我在Xcode 6.3(6D570)中创建了一个游乐场,并输入以下代码:
import UIKit
var randum_num = arc4random_uniform(13) + 1
String(format: "card%i", arguments: randum_num)
我收到了这个错误:
cannot find an initializer for type 'String' that accepts an argument list of type '(format: String, argument: UInt32
抱歉,我在Swift中完成了新功能,感谢您的任何建议!
P.S。我遵循本教程:link
答案 0 :(得分:13)
你只需要省略"参数:"。试试这样:
let randum_num = arc4random_uniform(13) + 1
String(format: "card%i", randum_num)
或只是
String(format: "card%i", arc4random_uniform(13) + 1)