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$| example in perl


 
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# 1  
$| example in perl

Could anyone please let me know the meaning of $| and where it is being used?

Thanks in advance...

Regards,
J
# 2  
A quick search gave me this: Perl Special Variables

Look for $OUTPUT_AUTOFLUSH or $|
# 3  
You should have read perlvar documentation (using perldoc perlvar in most cases) before asking this question.

This is a special variable which controls the output buffering of the currently selected output filehandle (which is STDOUT initially). Setting it to any true value (mostly 1 assigned to it) does buffer flush after any print, printf, or write on that handle. It normally means that you get to see output on that handle immediately, without (block) buffering coming into play.

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