Hi,
IMHO it's ok. I have three annotations:
If the array referred by $sites is used more than once, you could think about concatenating '_9' before doing the match.
You want to delete the item as soon as one pattern matches. Therefore you can shortcut the grep with using List::Util::any.
You could try to match against a regex which is build from the elements of the list.
my $regex = '_9(?:' . join('|', map { quotemeta } @$sites) . ')';
$text =~ /$regex/;
Regards
McA
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