hi it is ananymous subroutine Here $_ means value of the argument that passed to the sunroutine
And $$_ you can understand like below $name="ajay"; $class="name" $$class== ajay Thanks Ajay -----Original Message----- From: Shawn H Corey [mailto:shawnhco...@gmail.com] Sent: Thursday, September 10, 2009 5:39 PM To: Jyoti Cc: beginners@perl.org Subject: Re: Help Please Jyoti wrote: > Can someone explain me what these symbols mean in regular expression: > > my $trim = sub {local($_)=shift; > $$_ =~ s/^\s*//; > $$_ =~ s/\s*$//;}; > > Thanks. > Yes, it's all explained in: http://perldoc.perl.org/5.8.8/perlretut.html http://perldoc.perl.org/5.8.8/perlre.html -- Just my 0.00000002 million dollars worth, Shawn Programming is as much about organization and communication as it is about coding. I like Perl; it's the only language where you can bless your thingy. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/ ______________________________________________________________________ This communication contains information which is confidential. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s) please note any distribution, copying or use of this communication or the information in it is strictly prohibited. If you have received this communication in error please notify us by e-mail or by telephone (as above) and then delete the e-mail and all attachments and any copies thereof. ______________________________________________________________________ -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
