Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Re: Slow Regex - How to Optimize

by Anonymous Monk
on Aug 30, 2005 at 22:24 UTC ( #487971=note: print w/replies, xml ) Need Help??

Help for this page

Select Code to Download


  1. or download this
    if ( $line =~ /[^a-zA-Z]$sub[^a-zA-Z]*?\(/ ) {
    
  2. or download this
    foreach my $line ( @sub_code ) 
    {
    ...
            and exists $SUBS{$1}) 
        { push @subs, $key }
    }
    

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://487971]
help
Chatterbox?
[1nickt]: Good morning Monks and Monkettes!
[1nickt]: I have encountered a small code snippet I can not decipher: if ($?) { my $status = $? >> 8; ... }
[1nickt]: Hm, found the doc
[hippo]: >> is the bitwise shift, essentially divides the result by 256.
[haukex]: $? and system - the exit code of a process is stored in the upper bits of $?, so >> 8 does a bit shift to get at it
[hippo]: (truncating)
[erix]: aah, yes haukex++
[hippo]: Re: DBD::Sqlite queries slow - and gives wrong results has 6 upvotes. Is everyone quite well?

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (8)
As of 2017-12-13 11:34 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    What programming language do you hate the most?




















    Results (358 votes). Check out past polls.

    Notices?