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 reply to Re^3: Regex, capturing variables vs. speed by robin
in thread Regex, capturing variables vs. speed by albert

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