Brief notes on accessing individual hash values.
# The basic keyed access syntax:
my $address = $addresses{$name};
# String literals can also be used as hash keys:
my $address = $addresses{Victor}; # bareword, auto-quoted by perl
my $address = $addresses{'Sue-Lin'}; # not a bareword, needs quoting
my $address = $addresses{get_name()}; # function call needs disambiguation