In article <[EMAIL PROTECTED]>,
[EMAIL PROTECTED] (Ing. Branislav Gerzo) writes:
>PS> This isn't shorter, but it is easier to understand :-)
>
>PS> /^(\d+)(??{ $1 > 0 && $1 < 256 ? "" : "(?!)" }) \.
>PS> (\d+)(??{ $2 > 0 && $2 < 256 ? "" : "(?!)" }) \.
>PS> (\d+)(??{ $3 > 0 && $3 < 256 ? "" : "(?!)" }) \.
>PS> (\d+)(??{ $4 > 0 && $4 < 256 ? "" : "(?!)" })
>PS> $/x
>
>PS> There's probably a way of collapsing that into one expression
>PS> with a {4} after it, but I don't feel like looking for it.
>
>this is also nice example, thanks for postin, I didn't read about
>(??{}) and (?!) construction, it is really handy. But I think, there
>is a little error, try matching 123.0.0.1.
True. Well, easily fixed, at least.
>PS> Jeff Pinyan would know.
>
>why is that ?
Uh, because he knows this stuff... see some of his articles...
--
Peter Scott
http://www.perldebugged.com/
*** NEW *** http://www.perlmedic.com/
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
