buffer

问题 I need to convert data into String to Hex and then again from Hex to String using nodejs 8 I have issue while decoding from Hex to String Code to convert string into hex function stringToHex(str) { const buf = Buffer.from(str, 'utf8'); return buf.toString('hex'); } Code to convert hex into string function hexToString(str) { const buf = new Buffer(str, 'hex'); return buf.toString('utf8'); } I have string dailyfile.host output of encoding :

问题 Problem constraints: I am not using three.js or similar, but pure WebGL WebGL 2 is not an option either I have a couple of models loaded stored as Vertices and Normals arrays (coming from an STL reader). So far there is no problem when both models are the same size. Whenever I load 2 different models, an error message is shown in the browser: WebGL: INVALID_OPERATION: drawArrays: attempt to access out of bounds arrays so I suspect I am not manipulating multiple buffers correctly. The models

问题 Problem constraints: I am not using three.js or similar, but pure WebGL WebGL 2 is not an option either I have a couple of models loaded stored as Vertices and Normals arrays (coming from an STL reader). So far there is no problem when both models are the same size. Whenever I load 2 different models, an error message is shown in the browser: WebGL: INVALID_OPERATION: drawArrays: attempt to access out of bounds arrays so I suspect I am not manipulating multiple buffers correctly. The models

问题 Problem constraints: I am not using three.js or similar, but pure WebGL WebGL 2 is not an option either I have a couple of models loaded stored as Vertices and Normals arrays (coming from an STL reader). So far there is no problem when both models are the same size. Whenever I load 2 different models, an error message is shown in the browser: WebGL: INVALID_OPERATION: drawArrays: attempt to access out of bounds arrays so I suspect I am not manipulating multiple buffers correctly. The models

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 currently using this code to select a file from local disk to my api: <script language="javascript" type="text/javascript"> $(document).ready(function(){ $(':file').on('change', function () { var file = this.files[0]; if (file.type !== "video/mp4" && file.type!== "video/quicktime") { alert("Content must be video .mp4 or .mov") } $(':button').on('click', function () { if (file.type == "video/mp4" || file.type == "video/quicktime"){ $.ajax({ // Your server script to process the upload url:

问题 In the wonderful world of C# i can create a memory stream without specifying its size, write into it and then just take the underlying buffer. How can i do the same in c++? basicly i need to do: memory_stream ms(GROW_AS_MUCH_AS_YOU_LIKE); ms << someLargeObjects << someSmallObjects << someObjectsWhosSizeIDontKnow; unsigned char* buffer = ms.GetBuffer(); int bufferSize = ms.GetBufferSize(); rawNetworkSocket.Send(buffer, bufferSize); By the way I have boost in my project though I'm not all that

问题 I'm trying to write a demo-app that connects to a server and then simply keeps listening for randomly timed input from the server. Discovering the and connecting to the server works fine, now I start a new thread, so I don't block the ui. Now, in my thread, I need to continuously listen and react if there's incoming data. According to what I've read so far, it should be done like that: while (connected) { while ((line = bufferedReader.readLine()) != null) { // do something with line and

问题 I have an issue with GetCurrentDirectory() , and i don't really understand why. The thing i don't understand is that it works for XP but not for Seven (or at least on my computer). There is my code: char dir_name[1024]; // as a global variable int get_files() { // ... DWORD dwRet; dwRet = GetCurrentDirectory(MAX_PATH, dir_name); printf("%s\n",dir_name); printf("%d\n",dwRet); //... } This code will return: printf("%s\n",dir_name); -> return "c" printf("%d\n",dwRet); -> 42 (which is the right

问题 I'm studying OpenGL API and I would like to ask you if I can delete a float array of vertices after passing it to OpenGL. Example code: GLuint VBO; float *vertices = new float[2]; vertices[0] = 0.0f; vertices[1] = 1.0f; glGenBuffers(1, &VBO); glBindBuffer(GL_ARRAY_BUFFER, VBO); glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); delete[] vertices; Could you tell me consequences about doing it? 回答1: Yes, absolutely. After the glBufferData() call returns, you can do