http://qs321.pair.com?node_id=918360

baperl has asked for the wisdom of the Perl Monks concerning the following question:

hi, can you please help me understand what this means:
$|=1;
also, why are there 2 { in this code:
@puts = @{$h0{'puts'}};
and does the below return a hash?
my %h1 = %{$hr1};