emit

问题 I have following setup: In Child component: <template> <div @click="clickHandler"> </div> </template> <script> ... clickHandler() { this.$emit('emittedFunction', someInfo, otherInfo) } </script> In Parent component: <template> <child-component v-for="index in 10" @emittedFunction="(someInfo, otherInfo) => someFunction(index, someInfo, otherInfo)"/> </template> <script> ... someFunction(index, someInfo, otherInfo) { do stuff } </script> This code works perfectly fine. To my question though: A

问题 I want to create a multi-dimensional array using Reflection.Emit and set it's element. Like the following C# code: int[,] nums = new int[2, 2]; nums[1, 1] = 2; And turn into IL code: IL_0000: nop IL_0001: ldc.i4.2 IL_0002: ldc.i4.2 IL_0003: newobj instance void int32[0..., 0...]::.ctor(int32, int32) IL_0008: stloc.0 IL_0009: ldloc.0 IL_000a: ldc.i4.1 IL_000b: ldc.i4.1 IL_000c: ldc.i4.2 IL_000d: call instance void int32[0..., 0...]::Set(int32, int32, int32) The IL code to create array: newobj

问题 I've been looking through Inno Setup documentation and found this: (https://jrsoftware.org/ispphelp/index.php?topic=expressions) Filename: "file2.ext"; DestDir: {{#MyDestDir}} Why do we need to use an additional pair of curly braces here? Mustn't we type it like this instead DestDir: "{#MyDestDir}" ? 来源： https://stackoverflow.com/questions/63036551/why-is-there-an-additional-pair-of-curly-braces-on-the-inno-setup-preprocessor

问题 How do you emit event inside recursive child components vuejs Taking the tree example from vue site https://vuejs.org/v2/examples/tree-view.html How would you transmit on click to the parent each clicked elements id? 回答1: In the case of recursive elements, you can create an event bus in the parent, pass it to the children as a prop, and have each prop pass it to any children they generate. Each child emits events on the bus, and the parent handles them. I copied the tree-view exercise you

问题 I'd like to implement websocket reconnect in webapp if internet connection is lost. In order to detect that internet is lost I use ping-pong approach, which means that I send from client ping-message and server returns me pong-message. When webapp loaded I send init ping message and start to listen a reply on socket some kind of this: this.websocket.onmessage = (evt) => { try { const websocketPayload: any = JSON.parse(evt.data); if (websocketPayload.pong !== undefined && websocketPayload.pong

问题 I'd like to implement websocket reconnect in webapp if internet connection is lost. In order to detect that internet is lost I use ping-pong approach, which means that I send from client ping-message and server returns me pong-message. When webapp loaded I send init ping message and start to listen a reply on socket some kind of this: this.websocket.onmessage = (evt) => { try { const websocketPayload: any = JSON.parse(evt.data); if (websocketPayload.pong !== undefined && websocketPayload.pong

问题 my preview question how to write a if statement in setterBuilder statement, if i compare new value and old value , there are 3 ways . use " op_Inequality " as @DudiKeleti writes. use property.PropertyType.GetMethod("Equals" , sometimes there are errors , "System.NullReferenceException" use typeof(object).GetMethod("Equals" . what's my question. some data type , for example , int , doesn't has "op_Inequality" , what should i do then ? if i use typeof(object).GetMethod , i should alse use debug

问题 first of all , i have a class internal class Parent { protected void Write(string message, [CallerMemberName] string caller = null) { Console.WriteLine($"{caller} :: {message}"); } } and i want to dynamic create a class , the class has a property "Name", if the property value changed then call write method , looks like class Child : Parent { private string _name; public string Name { get { return _name; } set { if (_name != value) { Write("changedto: " + value); _name = value; } } } } what i

问题 I recently tried to expand my knowledge of the C language and I came across a program that used emit, to possibly emit a byte. __declspec(naked) void marker_begin() { __asm { _emit 0x51; _emit 0x21; _emit 0x1A; _emit 0x14; _emit 0x2C; _emit 0x5B; } } What could this be used for? Thanks in advance. 回答1: Your C program is executing inline assembly code by using the _asm keyword. _asm is a Microsoft specific keyword used in MSDN . The __asm keyword invokes the inline assembler. It must be

问题 I have a problem which started when updated to 1.4.5 recently. ( This has been working for the last 2 years ) . So when I send a client-msg to the server, the server receives the msg and then is supposed to emit the msg back to all the connected sockets ( including itself ). The problem I am now having is I can no longer emit messages to all the sockets. If I change the io.emit to socket.emit I receive the server-response just fine, but of course, that's only for that one socket. I even went