Re^2: Using number "0" as an input argument

Thanks for this. I just noticed I put "||" in my post instead of "//" which is what I have in my script. I know how they differ but thanks for pointing it out.

I have now figured out it was a combination of using the // operator and also chomp. The code now looks something like:

my $in1 = $ARGV[0];
chomp(my $in2 = $ARGV[1] // '');

if (defined $in1) {
   $in1 =~ s/\s+//g; # Remove all whitespace instead of chomp
   if ($in1 =~ /\D+/) {
      print "Input invalid. Only numbers are allowed\n";
   }
} else {
   print "No valid input given\n";
}
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Re^3: Using number "0" as an input argument by RonW (Parson) on Sep 22, 2015 at 17:37 UTC
`$in1 =~ s/\s+//g;` Although your comment suggests you are aware, I will still point out that `s/\s+//g` will remove all spaces, including spaces between digits/other characters, not just leading and trailing spaces. While unlikely to be a problem with your program, it is still possible to feed an unexpected value: `yourprog "1 2"` would result in `$in1` being 12 and `$in2` being empty	[reply] [d/l] [select]
Re^3: Using number "0" as an input argument by SuicideJunkie (Vicar) on Sep 22, 2015 at 14:54 UTC
This is why you should copy/paste code instead of retyping it in your post. Both more accurate and faster as well! :)	[reply]