No. You would simple do the following: 

$regex = "ISOLATION";
if ($dataline =~ m/$regex/";
   print "Found a match!\n";
} else {
   print "No match!\n";
}

[download]
Update: Watch my typos there. 2nd line should read if ($dateline =~ m/$regex/) {

$PM = "Perl Monk's";
$MCF = "Most Clueless Friar Abbot";
$nysus = $PM . $MCF;

In reply to Re: Regex from a variable... by nysus
in thread Regex from a variable... by Anonymous Monk

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