Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
PerlMonks  

Re: Massive regexp search and replace

by Anonymous Monk
on Feb 10, 2005 at 15:00 UTC ( #429755=note: print w/replies, xml ) Need Help??


in reply to Massive regexp search and replace

One problem you have is that you're recompiling the regexes over and over again. Better to cache them. I'd do something like:
# Preprocessing phase. my @subs = map {my($r, $s) = split /\t/; [qr/$r/, $s]} @Patts; # Real stuff. open(my $in, "<", "...") or die "..."; open(my $out, ">", "...") or die "..."; while (<$in>) { s/$_[0]/$_[1]/g for @subs; # No need for /ee, is there? print $out $_; } close $out or die "...";

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://429755]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (10)
As of 2016-12-08 19:41 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    On a regular basis, I'm most likely to spy upon:













    Results (144 votes). Check out past polls.