Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister

Re: Re: Re: Check tag value

by eXile (Priest)
on Apr 08, 2004 at 15:09 UTC ( #343628=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Check tag value
in thread Check tag value

Hi, you're code:
if ( $Lines eq "<NumberofDays>\d+</NumberofDays>" )
should be something like:
if ( $Lines =~ m|<NumberofDays>(\d+)</NumberofDays>| )
3 differences between your and my line:
  • eq vs. =~
  • to compare against a regular expression you use =~
  • the regular expression is in 'm|' and '|' characters
  • This is to make clear you are using a regular expression
  • the \d+ is in '(' and ')' characters
  • This is used to 'capture' the value of the expression inbetween them. In this case it would capture the value in $1. The rule is the first ()-match is captured in $1, the second in $2 etc. So in your code you could continue with something like
    print $1
Hope this helps getting you started. For documentation on regular expressions there are 2 good tutorials that come with perl that were not mentioned here: perlrequick perlretut

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://343628]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (1)
As of 2023-05-28 06:42 GMT
Find Nodes?
    Voting Booth?

    No recent polls found