buffer

问题 Does the input buffer gets cleared after scanf reads? #include <stdio.h> int main(void) { int a, b; scanf("%d", &a);//I inputted 3 scanf("%d", &b);//I inputted 4 } So when I gave the input 4 was 3 present in the input buffer? 回答1: So when I gave the input 4 was 3 present in the input buffer? No, the 3 was consumed. You cannot re-read it (as int or otherwise). If you input "3<enter>" the 3 is consumed and the buffer contains just the "<enter>" . You then type "4<enter>" which is added to the

问题 I am new to boost and networking ;). I am making a client server application with boost::asio, I need to pass structs as messages so used boost::asio::serialization for it : test.h #pragma once #include <boost/archive/binary_oarchive.hpp> #include <boost/serialization/serialization.hpp> struct Test { public: int a; int b; template<typename archive> void serialize(archive& ar, const unsigned version) { ar & a; ar & b; } }; client side sending: void send_asynchronously(tcp::socket& socket) {

问题 What is the default maximum and minimum buffer size of iOS AVPlayer? How to increasing its size for mp3 streaming? thank you 回答1: If your buffer size means playback buffer, then I believe this size is undocumented. This behaviour is provided by AVFoundation, quoted on Advances in AVFoundation Playback And we see that playback starts but then we quickly run into a stall because we didn't have enough buffer to play to the end. In that case, we'll go into the waiting state and re-buffer until we

问题 What is the default maximum and minimum buffer size of iOS AVPlayer? How to increasing its size for mp3 streaming? thank you 回答1: If your buffer size means playback buffer, then I believe this size is undocumented. This behaviour is provided by AVFoundation, quoted on Advances in AVFoundation Playback And we see that playback starts but then we quickly run into a stall because we didn't have enough buffer to play to the end. In that case, we'll go into the waiting state and re-buffer until we

问题 I am looking for an efficient and smart way to send data between a C++-program and a Python-script. I have a C++ program which calculates some coordinates in-real-time 30Hz. And I wanna access these coordinates with a Python-script. My first idea was to simply create a .txt-file and write the coordinates to it, and then have Python open the file and read. But I figured that it must be a smarter and more efficient way using the RAM and not the harddrive. Does anyone have any good solutions for

问题 I am looking for an efficient and smart way to send data between a C++-program and a Python-script. I have a C++ program which calculates some coordinates in-real-time 30Hz. And I wanna access these coordinates with a Python-script. My first idea was to simply create a .txt-file and write the coordinates to it, and then have Python open the file and read. But I figured that it must be a smarter and more efficient way using the RAM and not the harddrive. Does anyone have any good solutions for

问题 As stated in the Metal Shading Language Guide: Writes to a buffer or a texture are disallowed from a fragment function. I understand that this is the case, but I'm curious as to why. Being able to write to a buffer from within a fragment shader is incredibly useful ; I understand that it is likely more complex on the hardware end to not know ahead of time the end location of memory writes for a particular thread, which you don't always know with raw buffer writes, but this is a capability

问题 My Flow and Code: Uploading image from Form Data and storing image's BSON string to Database, below are the steps and code: Uploading file from multer upload Reading file from filesystem - fs Converting image content string to base64 string Converting base64 string to BSON String Configurations: node -v: v12.13.1 npm -v: 6.12.1 fs-extra: ^8.1.0 multer: ^1.4.2 Code: var upload = multer({ storage: multer.diskStorage({ destination: function (req, file, cb) { cb(null, 'uploads') }, filename:

问题 In C, we can use setvbuf(...) to set a buffer, its size, and a buffering mode. I am surprised to find that no one has asked how to read these values, given an open FILE* (e.g. stdout , or user-provided). I.e., how could one implement a " getvbuf(...) " routine (or even a subset of it)? void getvbuf(FILE* stream, char** pbuf,int* bufmode,size_t* bufsize); 回答1: I don't think its available as part of the standard. However Solaris has introduced some non standard mechanism to query few of these

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 :