swift - 快速的typealias关闭错误

我在一个Swift项目中使用AFNetworking。

1-Typealias闭包:

typealias successBlock = (AFHTTPRequestOperation! ,AnyObject!)-> Void
typealias failureBlock = (AFHTTPRequestOperation, NSError!) -> Void

2-定义功能:

func getUserInfo(success: (successBlock)!, failure: (failureBlock)!) {
   let path = "https://api.wei.s.json"
   let parameters = ["source":"key"]
   self.GET(path, parameters: parameters, success: success, failure: failure)
}

3-错误:



谢谢你的帮助。

EIDT:

typealias failureBlock = (AFHTTPRequestOperation, NSError!) -> Void

至

typealias failureBlock = (AFHTTPRequestOperation!, NSError!) -> Void

最佳答案

我觉得你想念一个!在failureBlock类型别名定义上，它期望显式展开的可选AFHTTPRequestOperation而不是标准的AFHTTPRequestOperation，它们实际上是不同的类型。我相信应该

typealias failureBlock = (AFHTTPRequestOperation!, NSError!) -> Void