Swift 编译错误 : 'case' label can only appear inside a 'switch' statement?

Question

我有一个简单的代码:

enum Coin {
    case heads: 0
    case tails
}

它在第 2 行抛出一个错误

error: 'case' label can only appear inside a 'switch' statement

如何解决？

Answer 1

试试这个:

enum Coin: Int {
    case heads = 0
    case tails
}