in reply to Re^2: This is not a pipe
in thread This is not a pipe

It's too late now, but if perl had added a special syntax of m!! to indicate a negated match we could use m!\|!. As it is we have a modified form of one of sfink's suggestions: $_ !~ m/\|/.

Also, what about? 

pipe(STDIN, STDOUT);
#Optional:
$|--, print STDOUT "This is not a pipe\n" ne <STDIN>;

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--
I'm not belgian but I play one on TV. On dit que je parle comme un belge aussi.

In Section Perl Poetry