use Data::Dumper;

{ 
  # This Makes sense:
  my @b;
  my @a=$b[0];
  print Dumper(\@a);   # $VAR1 = [ undef ];  
}

{ 
  # So does this:
  my @a = []->[0];
  print Dumper(\@a);   # $VAR1 = [ undef ];
}

{
  # But this makes no sense (and seems like bug):
  my @a = ()[0]; 
  print Dumper(\@a);   # $VAR1 = []
}
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Why should that last one return an empty list? I would expect an array of size 1 like the first 2 cases. Can someone please help shed some light on this? Thanks!