Re: Empty List miracle (2)

[Sandy]

If you compare the output of your empty_list routine in scalar and list context:

sub empty_list {
  return @{ [] }
}

my @y=(empty_list())[0];
my $x = (empty_list())[0];
use Data::Dumper;print Dumper \$x,\@y;

You will see that @y is an empty array, and $x is undef.

think of the difference between using $x and @y in your hash declaration:

my @y=(empty_list())[0];  # @y = ();
my $x = (empty_list())[0];  # $x = undef;

my %x = (foo=>$x);
my %xx = (foo=>@y);

So, to use your function in your hash declaration, you need to force scalar context.

my %x=(foo=>scalar((empty_list1())[0]));