Maybe I am not comprehending the question, but to eval ?! 
$IsNumber = '^\d+$';
($rValue=~$IsNumber);  # Returns 1 if the regex matches

# Or this returns the numeric $rValue if it matches $IsNumber
# else returns ""
($rValue=~$IsNumber && $rValue);

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Shout me down if I've missed the point completely here.

In reply to Re: double deference a variable by Anonymous Monk
in thread double deference a variable by coreywride

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