protocols

问题 I needed to delegate a click action for my UIView class to my UIViewController class since Swift does not support multiple class inheritance. So i wanted it such that once a button is clicked on my subview, a function in my BrowserViewController class is called. I am using a protocol to achieve this, but on the function does not triggered when the button is tapped. Please help me out. View Controller class BrowseViewController: UIViewController { var categoryItem: CategoryItem! = CategoryItem

问题 Ahoy Everyone, I have been working on a Node system for the last few nights, and have hit a bit of a road block (again XD) Below is a large chunk of code that handles Plugs ( which can be made up of different data types), and Nodes which hold the plugs, and can do something with the data from the plugs. It was copied out of a playground, so should "work" if pasted into one. I am currently stuck at the execution function in the AddNode , which would access the data from two plugs, add them

问题 Ahoy Everyone, I have been working on a Node system for the last few nights, and have hit a bit of a road block (again XD) Below is a large chunk of code that handles Plugs ( which can be made up of different data types), and Nodes which hold the plugs, and can do something with the data from the plugs. It was copied out of a playground, so should "work" if pasted into one. I am currently stuck at the execution function in the AddNode , which would access the data from two plugs, add them

问题 Ahoy Everyone, I have been working on a Node system for the last few nights, and have hit a bit of a road block (again XD) Below is a large chunk of code that handles Plugs ( which can be made up of different data types), and Nodes which hold the plugs, and can do something with the data from the plugs. It was copied out of a playground, so should "work" if pasted into one. I am currently stuck at the execution function in the AddNode , which would access the data from two plugs, add them

问题 my application sends data through protobuf from a server to a client. When I am deserializing the sent payload on the client side eclipse throws a expection of the follogwing type: Exception in thread "main" com.google.protobuf.InvalidProtocolBufferException: Protocol message tag had invalid wire type. The expection happens when I call "parseFrom()". I know that in most cases the error lies in a protobuf file with the wrong syntax. Therefore I hope that it is enough to post the protobuf

问题 I am trying to write a Wireshark dissector (in C) for a custom protocol. The first 3 bits of the packet defines how the rest of the packet is constructed. For example, if these 3 bits are 000, the remainder of the packet is a 5-bit field followed by 2 byte fields. If the leading 3 bit is 001, the remainder of the packet is a 13-bit field followed by a byte field. I can get the leading 3-bit field. In the dissector function, I've tried using this value to tailor the rest of the dissection thus

问题 I am trying to write a Wireshark dissector (in C) for a custom protocol. The first 3 bits of the packet defines how the rest of the packet is constructed. For example, if these 3 bits are 000, the remainder of the packet is a 5-bit field followed by 2 byte fields. If the leading 3 bit is 001, the remainder of the packet is a 13-bit field followed by a byte field. I can get the leading 3-bit field. In the dissector function, I've tried using this value to tailor the rest of the dissection thus

问题 I want to be able to store a class as a variable, so I can call class methods out of it later, something like this: class SomeGenericItem: NSObject { var cellClass: AnyClass init(cellClass: AnyClass) { self.cellClass = cellClass } func doSomething(p1: String, p2: String, p3: String) { self.cellClass.doSomething(p1, p2: p2, p3: p3) } } class SomeClass: NSObject { class func doSomething(p1: String, p2: String, p3: String) { ... } } I want to be able to say something like: let someGenericItem =

问题 I was able to find a lot of information about multipart/form-data but not much about multipart/related. In terms of the protocol / request format, can someone explain the differences between these two http specifications when it comes to file uploading? 回答1: multipart/form-data is used to upload files of MIME-compatible representation, such as pictures and video files, and related metadata a single POST request. That's what happens when you fill in a form online with attached pictures and

问题 I was able to find a lot of information about multipart/form-data but not much about multipart/related. In terms of the protocol / request format, can someone explain the differences between these two http specifications when it comes to file uploading? 回答1: multipart/form-data is used to upload files of MIME-compatible representation, such as pictures and video files, and related metadata a single POST request. That's what happens when you fill in a form online with attached pictures and