flush
flush in java.io.FileWriter
Writers and streams usually buffer some of your output data in memory and try to write it in bigger blocks at a time. flushing will cause an immediate write to disk from the buffer, so if the program crashes that data won’t be lost. Of course there’s no guarantee, as the disk may not physically … Read more
Can you force flush output in Perl?
By default, STDOUT is line-buffered (flushed by LF) when connected to a terminal, and block-buffered (flushed when buffer becomes full) when connected to something other than a terminal. Furthermore, <STDIN> flushes STDOUT when it’s connected to a terminal. This means STDOUT isn’t connected to a terminal, you aren’t printing to STDOUT, or STDOUT’s been messed … Read more
endl and flushing the buffer
Output is generally buffered before it’s written to the intended device. That way, when writing to slow to access devices(like files), it doesn’t have to access the device after every single character. Flushing means emptying the buffer and actually writing it to the device.
How can I flush the output of disp in Matlab or Octave?
Use fflush(stdout) and/or fflush(stderr) to flush the buffer from disp().
How can I clear an input buffer in C?
The program will not work properly because at Line 1, when the user presses Enter, it will leave in the input buffer 2 character: Enter key (ASCII code 13) and \n (ASCII code 10). Therefore, at Line 2, it will read the \n and will not wait for the user to enter a character. The … Read more
does close() imply flush() in Python?
Yes. It uses the underlying close() function which does that for you (source).
Not buffered http.ResponseWritter in Golang
As implied in the documentation, some ResponseWriter may implement the Flusher interface. This means you can do something like this : func handle(res http.ResponseWriter, req *http.Request) { fmt.Fprintf(res, “sending first line of data”) if f, ok := res.(http.Flusher); ok { f.Flush() } else { log.Println(“Damn, no flush”); } sleep(10) //not real code fmt.Fprintf(res, “sending second … Read more
Do you need to call Flush() on a stream or writer if you are using the “using” statement?
As soon as you leave the using block’s scope, the stream is closed and disposed. The Close() calls the Flush(), so you should not need to call it manually.
c++ force std::cout flush (print to screen)
Just insert std::flush: std::cout << “Beginning computations…” << std::flush; Also note that inserting std::endl will also flush after writing a newline.