Re: how to repeat non-atom patterns

ciwei wrote:
>
Given a multiple char patterns like ":C9" that repeated, how to write
a regex that repeat the patterns( which is non-atom ) 6 times. like
in below

WWPN:10:00:00:00:c9:2e:e8:90

I tried to define pattern to match

my $match= qr/ {:[0-9a-e][0-9a-e]}{6} /;
print matched if /$match/ ;

but it unable to match. any suggestions.

You need to enclose the subpattern in parentheses. The string you show
will match a regex like this:

'WWPN:10:00:00:00:c9:2e:e8:90' =~ /^WWPN(:[0-9a-f]{2}){8}$/;

but because normal parentheses will cause unnecessary substring captures, it's better to use the non-capturing structure (?: ... ) so
the regex becomes

/^WWPN(?::[0-9a-f]{2}){8}$/

HTH,

Rob

.

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