On Mon, 22 Jul 2002 10:40:29 +0300, [EMAIL PROTECTED] (Octavian Rasnita)
wrote:
>Hi all,
>
>I've seen the following line in more Perl scripts and even in some Perl
>books, but it wasn't very well explained.
>
>$|=1; ## Don't buffer output
>
>What does it mean to buffer output?
>Which is the difference if the $| is 0 or 1?
If you want a nice demo of the buffering problem, run
this:
###################################################
#!/usr/bin/perl
#without a newline, it won't print
#until the buffer is 2k
#$|=1; # try it with and without this line commented :-)
while (1){
print 'aaaaaa';
select(undef,undef,undef,.03);
}
####################################################
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