buffer

问题 System.out is a PrintStream object. I read the documentation on PrintStream. What I don't get is why System.out.print causes the buffer to be flushed? Shouldn't that happen only for println? 回答1: Shouldn't that happen only for println? The Javadoc doesn't say when it won't be flushed. And it says it will be flushed on a println() or a newline . 回答2: At the risk of repeating the facts that have already been noted, let me try to interpret the doc a little differently... It seems that it's only

问题 Im trying to build a persistence module and Im thinking in serialize/deserialize the class that I need to make persistence to a file. Is possible with Boost serialization to write multiple objects into the same file? how can I read or loop through entrys in the file? Google protocol buffers could be better for me if a good performance is a condition? 回答1: A Serialization library wouldn't be very useful if it couldn't serialize multiple objects. You can find all the answers if you read their

问题 I am trying to read a buffered stream of signed 16 bit integers (wav format), but the bufio.Read method only accepts an array of bytes. My question is a 2-parter: Can I preformat the byte stream into a buffered int16 array? If I can't, whats the best way of post-processing the byte array into int16 array? My initial thought is to use tmp arrays and keep pushing/processing them, but I was curious if there was a more idiomatic way of doing this? package main import ( "bufio" "io" "log" "os/exec

问题 I am using Android YouTube API to show a video in portrait mode. Upon playing the video and turning the device into landscape mode, the video continues from the spot left off but re-buffers. I am looking for a solution as to how avoid the re-buffering. I know for a fact its possible since Google provides an example here, and it works flawlessly except I can't seem to make it work with my application. I am unsure as to which functions to override and which ones actually remove the re-buffering

问题 I had started learning C programming, so I'm a beginner, while learning about standard streams of text, I came up with the lines "stdout" stream is buffered while "stderr" stream is not buffered, but I am not able to make sense with this lines. I already have read about "buffer" on this forum and I like candy analogy, but I am not able to figure out what is meant when one says: " This stream is buffered and the other one is not. " What is the effect? What is the difference? Update: Does it

问题 I'm working with the Buffer App API with HTTParty to try and add posts via the /updates/create method, but the API seems to ignore my "text" parameter and throws up an error. If I do it via cURL on the command line it works perfectly. Here's my code: class BufferApp include HTTParty base_uri 'https://api.bufferapp.com/1' def initialize(token, id) @token = token @id = id end def create(text) BufferApp.post('/updates/create.json', :query => {"text" => text, "profile_ids[]" => @id, "access_token

问题 I'm working on Linux driver for ADC ADS1243 and use IIO framework. I want to add feature to read and store data from ADC to IIO buffer. I added iio_triggered_buffer_setup() to probe function of driver. ret = iio_triggered_buffer_setup(indio_dev, NULL, &ads1243_trigger_handler, NULL); I'm using sysfs trigger and ads1243_trigger_handler is succesfully called. static irqreturn_t ads1243_trigger_handler(int irq, void *p) { struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev;

问题 I'm attempting to create a .wav file from a blob of data in Node JS, using fs.writeFile() . Firstly, is this even possible? I'm currently trying with this... fs.writeFile(filename + '.wav', blob.recording, function (err) { // On completing writeFile, transfer file via scp var options = {...}; var target_path = "the/path" if (err) return logger.error(err); else{ scp2.scp(options, target_path, function (err) { // scp2 callback: always gets here }); } }); The scp of the written file "completes"

问题 I have a pretty strange problem working with read streams in Node.js. I'm using SSH2 to create a sftp connection between me and a sftp server. I then try to create a read stream from the sftp stream. From the read stream's emitted 'data' event I append the data to an array. When the read stream's 'close' event occurs I make a call to Buffer.concat to create concat all the chunks of data I have retrieved into one buffer. This is the same technique described in other questions asked here at

问题 I'm developing a multi-process application using Node.js. In this application, a parent process will spawn a child process and communicate with it using a JSON-based messaging protocol over a pipe. I've found that large JSON messages may get "cut off", such that a single "chunk" emitted to the data listener on the pipe does not contain the full JSON message. Furthermore, small JSON messages may be grouped in the same chunk. Each JSON message will be delimited by a newline character, and so I