swift - PromiseKit 语法链 swift

Question

我试图在 promise 工具包上链接一些 promise，当 promise 类型像这样时我遇到语法问题 Promise<Location> ，只有当 promise 有类型时，我才会收到编译器错误。我刚开始使用 promisekit

Swift.start(host,"","").then{ result -> Void in

    }.then{ obj -> Void in
        println(obj)
        Swift.getCurrent.then{ obj -> Void in
            let payload:Dictionary<String,AnyObject> = obj as! Dictionary<String,AnyObject>
            self.deviceUUID = payload["uuid"] as! String

        }
    }.then { obj -> Location in
        println(obj)
        Swift.getLocation("3333").then{ location in
            self.locationUUID = location.get("uuid")
        }
    }

Answer 1

你不需要在你的 block 中返回:

.then { obj -> Location in
      Swift.getLocation("433434").then{ location in
          self.locationUUID = location.get("uuid")
      }
}