Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

Not having any of the data that you're working with, all I can do is offer suggestions that may or may not help - I can't actually test them out to see that if they don't work, I can keep my mouth shut. ;-)

So, I'm just curious what happens when you a) use a regexp optimiser from CPAN to "optimise" $big_string (of course, proving that the optimisation didn't break anything would be a bit painful), and b) pre-compile your @strings - e.g.:

print '$text = ', length $text, " characters\n", '$big_string = ', length $big_string, " characters\n", '@strings = ', scalar @strings, " items\n\n"; my $big_regexp = Regexp::Optimizer->new()->optimize($bit_string); my @small_regexps = map { qr/$_/i } @strings; my %cases = ( 'one_large' => sub { if($text=~/(stuff?)m0r3(?:[^:]*\.)?($big_regex +p)/i){my $match="$1:$2"}}, 'many_small' => sub { for(@small_regexps){ if($text=~/(stuff?)m0r3(? +:[^:]*\.)?($_)/i){my $match="$1:$2"}}}, ); cmpthese( 0, \%cases);

In reply to Re^3: pattern matching with large regex by Tanktalus
in thread pattern matching with large regex by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others learning in the Monastery: (6)
As of 2024-03-19 09:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found