Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

Re^3: Parenthesis grouping into regexes.

by aramisf (Sexton)
on Apr 26, 2012 at 18:45 UTC ( #967435=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Parenthesis grouping into regexes.
in thread Parenthesis grouping into regexes.

Labelling groups (with (?pattern) regex) showed me what was happening. It is all clear now.

Many thanks to everyone, specially BillKSmith!

I was having a trouble when using $1, $2... because I didn't know they exact behaviour.

The problem I had was with the parenthesis inside $ip4 regex, causing $2 to have an ip address,
$3 had the match inside the parenthesis in $ip4, and the prefix I expected put into $4:

# Example of my debug output: line = '*> 177.101.16.0/21 200.19.74.230 0 200' matches: $1:'*> ' $2:'177.101.16.0' $3: '16.' $4:'/21'

Now I understand how $1, $2, $3... are set.
Thank you all, Monks! =D


Comment on Re^3: Parenthesis grouping into regexes.
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://967435]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (7)
As of 2014-10-25 23:48 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    For retirement, I am banking on:










    Results (149 votes), past polls