What is the best place to learn about Regex. Is there a good site that takes you from the beginning all the way to advanced expressions?
On Tue, 3 Aug 2004 11:01:46 -0500, James Kuhns <[EMAIL PROTECTED]> wrote: > Oops - explination wrong... > > Without the g it would return a scalar 1 if a match was found or false if > not, you would need to backreference $1 to get the found value. > > > James > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of James Kuhns > Sent: Tuesday, August 03, 2004 9:53 AM > To: [email protected] > Subject: RE: [brlug-general] noob regex question > > Regex alone: /\{([^\}]*)\}/g > notice the g at the end - without it the regex would return a scalar with > text1 in it > Regex basically says: find a string that starts with { and ends with } but > does not have any }'s in the middle (avoids greedy matches - if you use .* > instead of [^\}]* you would get everything from the first { to the last }) > > Regex in action: > > #!/usr/bin/perl > > my $str = 'this is some {text1}. this is more {text2}. and yet some more > {text3}.'; > > my @results = $str =~ /\{([^\}]*)\}/g; > > # displays text3 (last match found) > print "$1\n"; > > # displays text1, text2 and text3 > foreach $result (@results) > { > print $result."\n"; > } > > James > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of John Hebert > Sent: Tuesday, August 03, 2004 9:20 AM > To: [email protected] > Subject: [brlug-general] noob regex question > > Howdy, > > I have a bunch of text with multiple tokens in it demarcated by { and }. > > Sample text: > this is some {text1}. this is more {text2}. and yet some more {text3}. > blahdeblah. > > What would a regular expression to get these tokens out of the text look > like, in a Perl script, say? > > Thanks, > John > > __________________________________ > Do you Yahoo!? > New and Improved Yahoo! Mail - Send 10MB messages! > http://promotions.yahoo.com/new_mail > > _______________________________________________ > General mailing list > [email protected] > http://brlug.net/mailman/listinfo/general_brlug.net > > _______________________________________________ > General mailing list > [email protected] > http://brlug.net/mailman/listinfo/general_brlug.net > > _______________________________________________ > General mailing list > [email protected] > http://brlug.net/mailman/listinfo/general_brlug.net > -- Adam Melancon Work: http://www.vermilion.lib.la.us Personal: http://www.melancon.org
