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Re: Re: Is it a number?

by broquaint (Abbot)
on Nov 12, 2002 at 00:19 UTC ( [id://212159]=note: print w/replies, xml ) Need Help??

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  1. or download this
    sub is_numeric {
      ($_[0] & ~ $_[0]) eq "0";
    }
    
  2. or download this
    print +(isnum($_) ? "is a number" : "not a number"), ": $_", $/
      for qw( 1 2.2 3e3 4. .5);
    ...
    is a number: 3e3
    is a number: 4.
    is a number: .5
    

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