Question

When using quote word in perl is it possible to have a undef value in the list?

my @ number_array = qw( 1 2 3 4 5 6 7 8 9 10 )

What I am wondering is would it be possible to add a undef value to that list so that it contained 11 values instead of 10?

Answer 1

There’s no null in perl, but you can use undef. Since qw explicitly operates only with space-separated string, you’d have to specify it outside of qw, but you can easily write several lists inside brackets:

my @number_array = (undef, qw( 1 2 3 4 5 6 7 8 9 10 ));
print scalar @number_array;

>11