How do I tell if a variable has a numeric value in Perl?

Question

Is there a simple way in Perl that will allow me to determine if a given variable is numeric? Something along the lines of:

if (is_number($x))
{ ... }
         


        

Answer 1

I don't believe there is anything builtin to do it. For more than you ever wanted to see on the subject, see Perlmonks on Detecting Numeric