Re^3: Regex, capturing variables vs. speed

in reply to Re^2: Regex, capturing variables vs. speed
in thread Regex, capturing variables vs. speed

Even faster is to use a single match, but to be explicit about what you're looking for, i.e.

            'Better' => sub {
                $line =~
                    /(chr\S*).*?urn:lsid:(\S*).*?panel:([^:]*)/i
            }
[download]

It's always better to write (\S*)\s than (.*?)\s, because you're making it clear to the matching engine exactly what you're looking for (non-space characters in this case).

In Section Seekers of Perl Wisdom