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
对不起,我是Swift的新手,感谢任何建议!
附:我正在学习本教程:link
解决方法
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)
或简单地说
String(format: "card%i",arc4random_uniform(13) + 1)