stream

问题 I'm trying to write a simple little snippet of code to respond to an arrow key press. I know that up is represented by ^[[A, and I have the following code that checks for that sequence: while( 1 ) { input_char = fgetc( stdin ); if( input_char == EOF || input_char == '\n' ) { break; } /* Escape sequence */ if( input_char == 27 ) { input_char = getc( stdin ); if( input_char == '[' ) { switch( getc( stdin ) ) { case 'A': printf("Move up\n"); break; } } } } Whenever I hit "up", the escape

问题 I'm a newbie of scala and not familiar to the stream close mechanism. I wrote some code like this. def loadResourceAsString(path: String) = { val is = this.getClass().getResourceAsStream(path) Source.fromInputStream(is).getLines().mkString("\n") } I found this in scala source code. The Source would return a BufferedSource which override close method to close the input stream. def fromInputStream(is: InputStream)(implicit codec: Codec): BufferedSource = createBufferedSource(is, reset = () =>

问题 I'm a newbie of scala and not familiar to the stream close mechanism. I wrote some code like this. def loadResourceAsString(path: String) = { val is = this.getClass().getResourceAsStream(path) Source.fromInputStream(is).getLines().mkString("\n") } I found this in scala source code. The Source would return a BufferedSource which override close method to close the input stream. def fromInputStream(is: InputStream)(implicit codec: Codec): BufferedSource = createBufferedSource(is, reset = () =>

问题 I'm a newbie of scala and not familiar to the stream close mechanism. I wrote some code like this. def loadResourceAsString(path: String) = { val is = this.getClass().getResourceAsStream(path) Source.fromInputStream(is).getLines().mkString("\n") } I found this in scala source code. The Source would return a BufferedSource which override close method to close the input stream. def fromInputStream(is: InputStream)(implicit codec: Codec): BufferedSource = createBufferedSource(is, reset = () =>

问题 Lets say I have a large file that I want to HTTP POST to a webservice using PHP and curl. The file is larger than the amount of memory I can let PHP use. Basically I'm looking for a way to stream the content of a file directly to curl, without reading the entire file into memory. I have success using multipart POSTs and PUT, but not "binary data" upload with POST. What I want to achieve in PHP is what this command line does: $ curl -X POST -H "Content-Type: image/jpeg" \ --data-binary "@large

问题 I'm would to know why AVPlayer ask's union ranges in requests. Example: 1. We have good wi-fi connection. 2. Track with total length = 1000000. AVPlayer in first will ask bytes=0-1 - its ok, it just "ping" the availability of track. But after that it will ask bytes=0-999999 - and get content-len 1000000 ; And after that it will ask bytes=40000-999999 - and get content-len 599999 ; Why it make third request if we must have all data from second request (bytes=0-999999)? 来源： https:/

问题 I'm would to know why AVPlayer ask's union ranges in requests. Example: 1. We have good wi-fi connection. 2. Track with total length = 1000000. AVPlayer in first will ask bytes=0-1 - its ok, it just "ping" the availability of track. But after that it will ask bytes=0-999999 - and get content-len 1000000 ; And after that it will ask bytes=40000-999999 - and get content-len 599999 ; Why it make third request if we must have all data from second request (bytes=0-999999)? 来源： https:/

问题 I am currently creating an encrypted file format that needs to be signed. For this I need to calculate the hash code of the content I have written to a stream. In the .net framework there is numerous hash algorithms that can be used, and it works fine, but it requires me to process the stream three times. byte[] content = new byte[] { 0, 1, 2, 3, 4, 5, 6 }; using (Stream fileStream = File.Open("myfile.bin", FileMode.Create)) { //Write content fileStream.Write(content, 0, content.Length); }

问题 I have been trying to listen to more than one collection from Firestone using a StreamBuilder or something similar. My original code when I was working with only one Stream was: import 'package:flutter/cupertino.dart'; import 'package:flutter/material.dart'; import 'package:cloud_firestore/cloud_firestore.dart'; class List extends StatefulWidget{ ///The reference to the collection is like ///Firestore.instance.collection("users").document(firebaseUser.uid).collection("list1").reference()

问题 I want to create a program that will stream video from my USB webcam over the internet to a web page. Currently, I use a webservice that when triggered, calls fswebcam to capture an image, save to data store, convert to base64 binary and send that data over to the HTML page where it is rendered into the 'src' attribute of 'img'. The HTML page has JavaScript that calls this service once per second. As you can tell this is a horrible way to do this. I would rather have a proper stream if I can.