buffer

问题 basically in codeblocks for windows before each printf I have "fflush(stdin);" which works. When I copied my code to Linux, it doesn't work, nor does any of the alternatives for "fflush(stdin);" that I've found. No matter which way I seem to do it, the input doesn't seem to be clearing in the buffer or something in my code is incorrect. #include <stdio.h> #include <math.h> #include <limits.h> #include <ctype.h> int main() { char pbuffer[10], qbuffer[10], kbuffer[10]; int p=0, q=0, k=0; int r,

问题 I'm using the skimage transform module's resize method. Not always, but sometimes, I'm getting an error on this line: candidate = resize(np.copy(img[candidate_box[0]:candidate_box[2],candidate_box[1]:candidate_box[3]]), (50,100)) It tells me: ValueError: Buffer not C contiguous How can I fix this? 回答1: Reshaping (and other operations) will sometimes disrupt the contiguity of an array. You can check whether this has happened by looking at the flags : >>> a = np.arange(10).reshape(5, 2).T >>> a

问题 I know that cout have buffer several days ago, and when I google it, it is said that the buffer is some like a stack and get the output of cout and printf from right to left, then put them out(to the console or file)from top to bottem. Like this, a = 1; b = 2; c = 3; cout<<a<<b<<c<<endl; buffer：|3|2|1|<- (take “<-” as a poniter) output：|3|2|<- (output 1) |3|<- (output 2) |<- (output 3) Then I write a code below, #include <iostream> using namespace std; int c = 6; int f() { c+=1; return c; }

问题 I'm running some benchmarks and some overflow the traceview buffer, I'm already using the max buffer size that I can (400MB). How can I get these data? (I need the hole benchmark to be traced, not only some smaller portions of the benchmark, each one in a different file) Is it possible to flush the buffer to a file when it is full? Is it possible to write everything directly in a file, instead of just when the trace stops? any other alternative? 来源： https://stackoverflow.com/questions

问题 The C++ std::setvbuf function enables the regulation of a file stream by various buffering options. That stream can only process plain char s though. Is there an equivalent version for wide characters ( wchar_t ) available? 回答1: setvbuf works in Windows 8+ to enable writing UTF8 in console window. Reading UTF8 is still not supported as of Windows 10 build 1803. In Visual Studio you can use compiler specific _setmode to read/write UTF16 in console window. But this may not be an option in other

问题 I've set up a custom logger in an initializer: # /config/initializers/logging.rb log_file = File.open("#{Example::Application.config.root}/log/app.log", "a") AppLogger = ActiveSupport::BufferedLogger.new(log_file) AppLogger.level = Logger::DEBUG AppLogger.auto_flushing = true AppLogger.debug "App Logger Up" Although it creates the log file when I start the application, it doesn't write to the log file. Either from AppLogger.debug "App Logger Up" in the initializer or similar code elsewhere in

问题 I want to write compiler with C# for the first time and I somehow lost what to do about its buffering! My reference is Compilers, Principles, Techniques and Tools, and it says: Because of the amount of time taken to process characters and the large number of characters that must be processed during the compilation of a large source program, specialized buffering techniques have been developed to reduce the amount of overhead required to process a single input character.An important scheme

问题 In the manual about functions of buffer-using given at http://man7.org/linux/man-pages/man3/setbuf.3.html, a piece of code below is declared as invalid. However, when I try that on my machine, things go well: #include <stdio.h> int main(void) { char buf[BUFSIZ]; setbuf(stdin, buf); printf("Hello, world!\n"); return 0; } The reason given by that age is : You must make sure that the space that buf points to still exists by the time stream is closed, which also happens at program termination. I

问题 buf.slice([start[, end]]) Returns a new Buffer that references the same memory as the original, but offset and cropped by the start and end indices. Note that modifying the new Buffer slice will modify the memory in the original Buffer because the allocated memory of the two objects overlap. How does garbage collector handle allocated memory if one of the references is gone? 回答1: When you perform a slice on a Buffer, you are only creating a new reference to the original buffer, which starts

问题 I have a simple haskell program, which do prompt some message to user, with '\n' waiting for user input print user's input If I launch the program from a command prompt or from a cygwin shell which is launched from a command prompt, it is ok. But if I launch the program from ssh shell which is connected to a local cygwin environment, the program don't write anything back to terminal until it exit. It looks like the buffer for STDOUT in ssh shell is not line buffered but block buffered. I don