swift - 在 Swift 4 中处理 SIGPIPE

Question

我正在尝试将我的 Obj-C 代码移植到 Swift 项目中，并且在编译 SIGPIPE 处理程序时遇到了困难：

func SigPipeHandler()
{
  print(@"We Got a Pipe Single :%d____________",s);
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, SigPipeHandler);
    // Override point for customization after application launch.
    return true
}

我收到错误消息：

无法将类型“（）->（）”的值转换为预期的参数类型“（@convention（c）（Int32）-> Void）？”

标签： swift

Answer 1

let handler: @convention(c) (Int32) -> () = { sig in
    // handle the signal somehow
    print("error", sig)
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, handler);
    // Override point for customization after application launch.
    return true
}