Solved

perl regex match assignment on same line

Posted on 2010-11-10
5
732 Views
Last Modified: 2012-05-10
How can I do this in one line
                        $myvar=~ m/(\d[\d.,]*)/;
                        $myvar= $1;
0
Comment
Question by:NewtonianB
5 Comments
 
LVL 6

Accepted Solution

by:
Ferrosti earned 400 total points
ID: 34102514
$myvar = $1 if ($myvar=~ m/(\d[\d.,]*)/);

should do that.
0
 

Author Comment

by:NewtonianB
ID: 34102544
What happens if this is in an if block that does matching itself?
if ($line=~ m/mymatch/) {
      $myvar = $1 if ($line=~ m/(\d[\d.,]*)/);
}

is that valid?
0
 
LVL 26

Assisted Solution

by:wilcoxon
wilcoxon earned 50 total points
ID: 34102950
Yes.  That is perfectly valid - it's no different than having nested ifs.
0
 
LVL 6

Assisted Solution

by:deiaccord
deiaccord earned 50 total points
ID: 34103207
You could also try using a substitution instead

$myvar = s/.*?((\d[\d.,]*).*?/$1/;
0
 
LVL 84

Expert Comment

by:ozo
ID: 34106697
($myvar) = $myvar=~ m/(\d[\d.,]*)/;
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

by Batuhan Cetin Regular expression is a language that we use to edit a string or retrieve sub-strings that meets specific rules from a text. A regular expression can be applied to a set of string variables. There are many RegEx engines for u…
I have been reconstructing a PHP-based application that has grown into a full blown interface system over the last ten years by a developer that has now gone into business for himself building websites. I am not incredibly fond of writing PHP code o…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now