Errin Larsen wrote: > Hi Perl-Buddies, > > I'm wondering how to get a regex into my code at run-time. I mean in > a command line like this: > > # my_perl_program "foo(\w|and|or)+bar" foobar.txt > > and in my code I want to be able to search the foobar.txt file with > the regex found in the quotes. So if I assign the above to a > variable: > > my $regex = shift; > > How do I use the regex in $regex in a m// oeration? > Do I just throw it in there? > > /$regex/ > > That seems to work, but is it doing what I think it's doing? I may be > over-thinking myself here, but it just seems too easy!
Yes, that's fine. Since $regex doesn't change once it's assigned, you should use the /o option. /$regex/o Do 'perldoc perlop' and search for the string "poor man's grep" for an example. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
