Thanks for the small tutorial - but I must admit that I can only see (according to your explanation) the regex to be matching anything except a dot. So substituting them should return only 1 or more dots. But that isn't what we get here. You're by saying that the dot in a class is not a special qualifier.
Oh! How I wish I could understand it. :-) I think I need to go back to learn some more regexs. ||> -----Original Message----- ||> From: Wiggins d Anconia [mailto:[EMAIL PROTECTED] ||> Sent: Friday, April 16, 2004 5:40 PM ||> To: B. Fongo; [EMAIL PROTECTED] ||> Subject: Re: What exactly is this simple regex doing? ||> ||> Please bottom post.... ||> ||> > ||> > This regex by Rob is working alright, but can't follow exactly how it ||> > truncates an absolute url from first character to the one before the ||> > dot. ||> > ||> > It returns (.domain4you.com from http:://www. domain4you.com.) exactly ||> > what is expected, but I can't easily understand it. ||> > ||> > Please I'm not pulling anyone's leg. So just explain it if you can. ||> > ||> > (.domain4you.com from http:://www. domain4you.com.) ||> > ||> > ||> > foreach (@domains) { ||> > my $name = $_; ||> > $name =~ s/^[^\.]+//; ||> > print $name; ||> > } ||> ||> The initial ^ says to start matching at the beginning of the string. ||> ||> [] defines a character class, so we are going to match against ||> characters in the class. ||> ||> In this case the ^ *because it is the first character* of the class ||> causes the class to be negated, aka we are going to match any character ||> *not* in the class. The class is a \ and a . though I suspect that ||> should just be a . because I believe dot inside a class is not special. ||> ||> The + says one or more of the characters matched by the class. ||> ||> So it is really saying match one or more characters that are not a dot ||> starting at the beginning of the string. Or, match everything up until ||> the first dot. ||> ||> http://danconia.org -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
