![]() ![]() For instance, in this little bit of code, you want to print a dot to the screen for every line you process to watch the progress of your program. By saving up output, it makes fewer expensive system calls. Perl normally buffers output so it doesn't make a system call for every bit of output. You might like to read Mark Jason Dominus's "Suffering From Buffering" at. # How do I flush/unbuffer an output filehandle? Why must I do this? This section deals with I/O and the "f" issues: filehandles, flushing, formats, and footers.
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