You can use the qr// operator, that even works with modifiers: 

my $regex = qr/(.)\1+/i;
@ret = grep m/$regex/, @values;

[download]

But for me your code works as well.

(Update: removed p6ism, tinita++)

Perl 6 in German -- Difficult Sudoku

In reply to Re: set value of a variable to a regexp by moritz
in thread set value of a variable to a regexp by pc2

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