> -----Original Message----- > From: Leon [mailto:[EMAIL PROTECTED]] > Sent: Friday, December 21, 2001 5:05 AM > To: [EMAIL PROTECTED] > Subject: how to construct regexes so that it do not match null > > > Without using $key == $cid, > How to construct a pattern so that $key match $cid. > I do not understand why in the undermentioned script, $key match $cid. > All explanations would be very much appreciated. > Thanks > > use strict; > my $cid = ''; > my $key = '1234'; > if ($key=~/\b$cid\b/) { > print 'true'; > }else {print 'false'};
Hmm, why do you want to use a regex? Anyway, you need: $key =~ /^$cid$/ But you need to be careful about what characters $cid might contain, so you're better to say: $key =~ /^\Q$cid\E$/; which is equivalent to the much more straightforward: $key eq $cid; -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
