Another way to write it: 

unless ($input =~ /badinput/) {
    print $input;
}

[download]

Or even 

print $input unless $input =~ /badinput/;

[download]

With perl 5.10 or newer you can also write 

use 5.010;

given ($input) {
    print unless /badinput/;
}

[download]

Though usually it is a better idea to check for valid input (whitelisting) than checking for bad input (blacklisting).

Perl 6 - the future is here, just unevenly distributed

In reply to Re: totally lost by moritz
in thread totally lost by sweepy838

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