Re: Re: How to determine if something is numeric?

we must have different versions of something.
when I run that code id get the following error

erickn@hestia:/home/erickn/wo> perl x "looks_like_number" is not exported by the Scalar::Util module Can't continue after import errors at x line 5 BEGIN failed--compilation aborted at x line 5.

line 5 is the use line

I'm using perl 5.8.0
It looks like Scalar::Util uses List::Util and that version in my system is 1.07_00
any ideas?

Comment on Re: Re: How to determine if something is numeric?

Replies are listed 'Best First'.

Re: Re: Re: How to determine if something is numeric?
by Limbic~Region (Chancellor) on Jan 30, 2004 at 19:41 UTC

mifflin

looks_like_number

Scalar::Util

sub looks_like_number {
  local $_ = shift;

  # checks from perlfaq4
  return 1 unless defined;
  return 1 if (/^[+-]?\d+$/); # is a +/- integer
  return 1 if (/^([+-]?)(?=\d|\.\d)\d*(\.\d*)?([Ee]([+-]?\d+))?$/); # 
+a C float
  return 1 if ($] >= 5.008 and /^(Inf(inity)?|NaN)$/i) or ($] >= 5.006
+001 and /^Inf$/i);

  0;
}
[download]

Cheers - L~R

[reply]
[d/l]

Re: Re: Re: How to determine if something is numeric?
by PodMaster (Abbot) on Jan 30, 2004 at 19:40 UTC

It looks like Scalar::Util uses List::Util and that version in my system is 1.07_00 any ideas?

MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"
I run a Win32 PPM repository for perl 5.6.x and 5.8.x -- I take requests (README).
** The third rule of perl club is a statement of fact: pod is sexy.

[reply]