Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical

Re^8: Help with RegEx

by mr_p (Scribe)
on Jul 01, 2010 at 17:03 UTC ( #847562=note: print w/replies, xml ) Need Help??

in reply to Re^7: Help with RegEx
in thread Help with RegEx

OK. All I am trying to say is for little bit of information I don't want to load document. I will spend more time on RegEx then loading a parser that I don't need too. Besides I can either get XML or HTML document.

Please don't take it the wrong way. I don't mean to go against you. You have helped me lots of time and this site has been really great for me. Its just that I want to be able to use perl and keep things a fast as possible. I want to keep my project. I don't want anyone saying perl is slow form my dept.

Thanks for your help.

Replies are listed 'Best First'.
Re^9: Help with RegEx
by ssandv (Hermit) on Jul 01, 2010 at 19:36 UTC

    Regular expressions with potentially zero-width wildcards (especially .*) can be exceedingly slow. If someone claims Perl is slow because it handles a difficult regular expression with due care, then that simply shows a lack of understanding on their part. Perl contains a regular expression engine, as do many other languages--but regular expression syntax is a language unto itself.

    Part of the advantage of using a module is that you get to take advantage of the effort someone else has gone to to get the regular expression right and (hopefully) efficient.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://847562]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (8)
As of 2016-10-24 09:32 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (304 votes). Check out past polls.