Check if Perl value is alpha or numeric 1

[kb0rhe]

I have a value and I want to know if it is a numeric value.

There isn't anything to test a value if it is truly numeric. Nothing is jumping out at me. I have been looking online for a while.

Douglas

 

[KevinADC]

numeric is harder to check than for simple digits:

some ways that might work:

if (/\D/) {
   print "there is something that is not a digit";
}

if (/^\d+$/) {
   print "there are only digits in this thing so it's numeric.";
}

if (/\d/ && /^-?\d*\.?\d*$/) {
   print "an integer, negative number, or a decimal but not some other type of numeric value";
}

more ways to check here:

http://perldoc.perl.org/perlfaq4.ht...her-a-scalar-is-a-number/whole/integer/float?

- Kevin, perl coder unexceptional!