buffer

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I have something like this. char header[4096]; //header information from a file there is a field called startByteOffset which is 8 bytes (offset in header is 8 too) and then there is endByteOffset which is 8

问题 Let's say I am constructing a string, or series of bytes, of variable length, in Node. The documentation for buf.write says: https://nodejs.org/api/buffer.html#buffer_buf_write_string_offset_length_encoding Writes string to buf at offset according to the character encoding in encoding. The length parameter is the number of bytes to write. If buf did not contain enough space to fit the entire string, only a partial amount of string will be written. However, partially encoded characters will

问题 I'm trying to save several matplotlib figures into specific locations in a PDF being created with FPDF. I'd prefer not to have to dump these figures to files and then pull them back in. The better solution seems to be writing them to a buffer, then reading them back in, but I'm not sure that's possible. Simplified code: import pandas as pd import matplotlib.pyplot as plt from fpdf import FPDF from io import BytesIO import base64 # create figure fig = plt.figure() # add plot ax = pd.Series( [1

问题 I'm trying to process part of a text file, and write the remainder of the text file to a cloud blob using UploadFromStream . The problem is that the StreamReader appears to be grabbing too much content from the underlying stream, and so the subsequent write does nothing. Text file: 3 Col1,String Col2,Integer Col3,Boolean abc,123,True def,3456,False ghijkl,532,True mnop,1211,False Code: using (var stream = File.OpenRead("c:\\test\\testinput.txt")) using (var reader = new StreamReader(stream))

问题 I'm trying to process part of a text file, and write the remainder of the text file to a cloud blob using UploadFromStream . The problem is that the StreamReader appears to be grabbing too much content from the underlying stream, and so the subsequent write does nothing. Text file: 3 Col1,String Col2,Integer Col3,Boolean abc,123,True def,3456,False ghijkl,532,True mnop,1211,False Code: using (var stream = File.OpenRead("c:\\test\\testinput.txt")) using (var reader = new StreamReader(stream))

问题 I'm trying to process part of a text file, and write the remainder of the text file to a cloud blob using UploadFromStream . The problem is that the StreamReader appears to be grabbing too much content from the underlying stream, and so the subsequent write does nothing. Text file: 3 Col1,String Col2,Integer Col3,Boolean abc,123,True def,3456,False ghijkl,532,True mnop,1211,False Code: using (var stream = File.OpenRead("c:\\test\\testinput.txt")) using (var reader = new StreamReader(stream))

问题 Hi using MPMoviePlayerController to stream video into the app. However, it takes a long time to load and I want to be able to pre-buffer the video. Any suggestions? 回答1: Use [MPMoviePlayerControllerInstance prepareToPlay] as soon as you know that the user might start playback of a movie. You might also want set MPMoviePlayeController.autoPlay to something that fits best, depending on your application. From Apple's Documentation; This method is called automatically when you call the play

问题 Hi using MPMoviePlayerController to stream video into the app. However, it takes a long time to load and I want to be able to pre-buffer the video. Any suggestions? 回答1: Use [MPMoviePlayerControllerInstance prepareToPlay] as soon as you know that the user might start playback of a movie. You might also want set MPMoviePlayeController.autoPlay to something that fits best, depending on your application. From Apple's Documentation; This method is called automatically when you call the play

问题 I want to draw directly on the desktop in C#. From searching a bit, I ended up using a Graphics object from the Desktop HDC (null). Then, I painted normally using this Graphics object. The problem is that my shapes get lost when any part of the screen is redrawn. I tried a While loop, but it actually ends up drawing as fast as the application can, which is not the update rate of the desktop. Normally, I would need to put my drawing code in a "OnPaint" event, but such thing does not exist for

问题 When I send "M" String to the Device I call time function from where I make my String. Code: ` mManButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { man = 1; clearScreen(); mManButton.setBackgroundResource(R.color.button_pressed); mStartButton.setBackgroundResource(R.color.button_default); mCalButton.setBackgroundResource(R.color.button_default); mTestButton.setBackgroundResource(R.color.button_default); mLinearButtton.setBackgroundResource(R.color.button