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.

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

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