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in reply to Re: Regular Expression - delimiter/spaces problem
in thread Regular Expression - delimiter/spaces problem

Thanks a lot for your solution. I tried and it worked fine. I have questions regarding the dash_or_digit reg.

my $dash_or_digits     = qr{ (?: - | \d+ ) }msx

Why are using (?:)?

I never used this expression before and checked http://perldoc.perl.org/perlreref.html but it is not clear why use it. I tried it without and it worked also:

my $dash_or_digits     = qr{ - | \d+  }msx

Can you please let me know the reason? Thank you.

regards deMichi