Swift 嵌套结构访问

Question

我有以下嵌套结构:

public struct Session {
    public enum Type: Int {
        FirstLaunch = 0, NotRegistered, LoggedOut, LoggedIn
    }
}

它非常简单，非常准系统。但是，当我尝试访问 FirstLaunch 时，Xcode 会抛出以下错误:

'Session.Type.Type' does not have a member named 'FirstLaunch'

有人知道发生了什么事吗？

Answer 1

Type 是 Swift 中的保留字。您可以通过用反引号包围它来转义它。

“If you need to give a constant or variable the same name as a reserved Swift keyword, you can do so by surrounding the keyword with back ticks (`) when using it as a name. However, you should avoid using keywords as names unless you have absolutely no choice.”

摘自:Apple Inc.“The Swift Programming Language”。电子书。 https://itun.es/us/jEUH0.l