On Mon, Mar 17, 2008 at 6:51 AM, <[EMAIL PROTECTED]> wrote: > How is it possible to initialize variable using 0 or '' and not having > undef warning later on using them? snip
Well, you can say my $var = 0; but that doesn't prevent the variable from being set to undef later, so if it is possible for the variable to be undef you should guard against it with the defined function (or, if you have Perl 5.10, the // operator): print "\$var is ", (defined $var ? $var : "undef"), "\n"; #Perl 5.8 and below say "\$var is ", $var // "undef"; #Perl 5.10 -- Chas. Owens wonkden.net The most important skill a programmer can have is the ability to read. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
