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in reply to can any reply out with a better code than this??

can any one suggest a better code to this??
#!/usr/bin/perl -w my $string = "rid"; while (<>) { if (/($string){3}/) { print; } }
Yes, for sure:
#!/usr/bin/perl -w my $string = "rid"; while (<>) { if (/($string){3}/) { print; } }
and, arguably:
use strict; my $string = 'ri\d+'; while (my $line = <>) { if ($line =~ m{ (?: \Q$string\E ){3} }xms) { print $line; } }