In a message dated 6/4/2004 3:31:51 PM Eastern Standard Time, [EMAIL PROTECTED] writes: >I've read that > >@a = undef; > >creates an array with 1 empty element. Why does it do so? (I'm trying to >learn to think like Perl, not just learn it by rote.) >
The best way to think of it, I think, is that parenthesis are optional for lists. It's necessary, however, for more than one item when assigning a list to an array because precedence dictates that the comma (,) binds looser than the equal sign (=). So @a = undef; is actually evaluated as @a = (undef); and something like @a = undef, 2; is actually evaluated as (@a = (undef)), 2; -will http://www.wgunther.tk (the above message is double rot13 encoded for security reasons) Most Useful Perl Modules -strict -warnings -Devel::DProf -Benchmark -B::Deparse -Data::Dumper -Clone -Perl::Tidy -Beautifier -DBD::SQLite -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
