As part of regex use o like /$accept/o and this should compile only once vs
each time through. Don't have all my books with me, but believe this will do it.
Wags ;)
-----Original Message-----
From: Nikola Janceski [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 21, 2002 10:50
To: Beginners (E-mail)
Subject: precompile regular expressions?
Is there a way to precompile regular expressions?
I have an array of acceptable matches, and an array of items to grep from.
I want to avoid recompiling the regular expression over and over again, for
each loop.
ie. (imagine these lists are much longer).
@stuff = (
"Micheal",
"Marko",
"Marcy",
"Rebecca",
"Bob",
"Jancy",
"Jill",
"Jamie",
"Jack",
);
@accept = qw( Ja Ma );
my @goodstuff;
foreach my $item (@stuff){
foreach my $accept (@accept){
push @goodstuff, $accept if $item =~ /$accept/; ## my
problem is this might take long recompiling each time
}
}
print "@goodstuff\n";
__END__
# alternative is:
foreach my $accept (@accept){
push @goodstuff, grep /$accept/, @stuff;
}
# but this isn't better because in my script @accept is much bigger/longer
than @stuff
Nikola Janceski
Here it is my time,
Where there are no crimes,
Only I exist here,
And have no fear.
-- Riddles
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