Solved

perl regex match assignment on same line

Posted on 2010-11-10
5
734 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

Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

Do you hate spam? I do, and I am willing to bet you do as well. I often wonder, though, "if people hate spam so much, why do they still post their email addresses on the web?" I'm not talking about a plain-text posting here. I am referring to the fa…
Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
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…

777 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