buffer

问题 I am trying to sort a buffer using STL sort. Now, Im using qsort but i read that stlsort has a better performance because of the inline "compare" function. The buffer has elements of size 52. It has, for example, 1024 elements of size 52. Here is a part of my code. It is working well, but I want to use the STL sort. I am sorting a fixed length file. Each fixed length file has a record size, so the user has to inform the record size. In the example below i put 52. HANDLE hInFile; char *

问题 Suppose you run the following commands: ssh $host1 'while [ 1 ]; do sleep 1; echo "Hello from $HOSTNAME"; done' > /tmp/output ssh $host2 'while [ 1 ]; do sleep 1; echo "Hello from $HOSTNAME"; done' >> /tmp/output ssh $host3 'while [ 1 ]; do sleep 1; echo "Hello from $HOSTNAME"; done' >> /tmp/output Then the output would look like: Hello from host1 Hello from host2 Hello from host3 Hello from host1 ... But what if I changed it to ssh $host1 'while [ 1 ]; do sleep 1; cat /some/large/file1.txt;

问题 I want to generate a custom DTMF tone and play it on the iPhone. In order to do so, I have created and allocated a memory buffer with a custom tone (ptr). Now I want to create a NSData object, initialized with the memory buffer, and pass it to AVAudioPlayer using initWithData:error: instance method. I wrote the following code, but when I run my application, it crashes. #import "AudioPlayerViewController.h" #include <stdlib.h> #include <math.h> #define SIZE 10 #define LENGTH 65535 const int

问题 In AWS, I am issuing a get request through Lambda with the https module. I am able to return the data, but it is in the buffer format when I call callback(null, obj) https.get(options, (res) => { res.on('data', (d) => { var foo = (JSON.stringify(d)); var foo1 = d.toString('utf8'); var obj = { bar: foo, bar1: foo2 }; callback(null, obj); }); }).on('error', (e) => { console.error(e); }); Returns this: Response: { "bar": "{\"type\":\"Buffer\",\"data\":[31,153,38,35,...]}", "bar1": "[{\"app_id\"

问题 I'm trying to prototype a piece of networking for a coloring book type application I'm developing that allows users to create an image and then send that image to a server that then takes the image and wraps it around an instantiated mesh. My initial problem in this iteration is buffer size. I'm getting the error: NetworkWriter WriteBytes: buffer is too large (699064) bytes. The maximum buffer size is 64K bytes. UnityEngine.Networking.NetworkWriter:WriteBytesFull(Byte[]) TextureMessage

问题 I am trying to upload chunks of base64 to node js server and save those chunks into one file let chunks = []; app.post('/api', (req, res) => { let {blob} = req.body; //converting chunks of base64 to buffer chunks.push(Buffer.from(blob, 'base64')); res.json({gotit:true}) }); app.post('/finish', (req, res) => { let buf = Buffer.concat(chunks); fs.writeFile('finalvideo.webm', buf, (err) => { console.log('Ahh....', err) }); console.log('SAVED') res.json({save:true}) }); Problem with the above

问题 I wrote a standard code for receiving data from microphone by using AudioRecord. Here is my code: AudioReceiver() { int minHardwareBufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT); Log.d(TAG, "minHardwareBufferSize = " + minHardwareBufferSize); int bufferSizeBytes = (minHardwareBufferSize > MIN_BUFFER_SIZE_BYTES) ? minHardwareBufferSize : MIN_BUFFER_SIZE_BYTES; bufferSizeShorts = bufferSizeBytes / 2; //резервируем буфер с запасом в 2 раза audioRecorder =

问题 Do I have to create separate webglbuffers if I have two programs or can I use the same ones in each? this.program = gl.createProgram(); gl.attachShader(this.program, vs); gl.attachShader(this.program, fs); gl.linkProgram(this.program); //gl.useProgram(this.program); this.cellProgram = gl.createProgram(); gl.attachShader(this.cellProgram, cvs); gl.attachShader(this.cellProgram, cfs); gl.linkProgram(this.cellProgram); //gl.useProgram(this.cellProgram); this.texCoordBuffer = gl.createBuffer();

问题 I'm new to Golang and I'm trying to write into a Buffer that should be 0 filled to a specific size before starting writing into it. My try: buf := bytes.NewBuffer(make([]byte, 52)) var pktInfo uint16 = 243 var pktSize uint16 = 52 var pktLine uint16 = binary.LittleEndian.Uint16(data) var pktId uint16 = binary.LittleEndian.Uint16(data[6:]) // header binary.Write(buf, binary.LittleEndian, pktInfo) binary.Write(buf, binary.LittleEndian, pktSize) binary.Write(buf, binary.LittleEndian, pktLine) //

问题 Is it possible to pipe serial console output to a file or a buffer or some virtual or pseudo device (in /dev)? The Kernel command line has in startup at this point "console=null,115200". (Normally it has "console=ttyS0,115200" - my requirement is: if "console=null,115200", should the output go to some other place than ttyS0, e.g. a virtual or pseudo device or to a file/buffer) Maybe somebody know if there is good solution available? Thanks a lot in advance! 回答1: There are two ways that I am