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
|
---|
Replies are listed 'Best First'. | |
---|---|
Re^3: Regular Expression - delimiter/spaces problem
by shmem (Chancellor) on Feb 15, 2014 at 14:59 UTC |
In Section
Seekers of Perl Wisdom