Creating hashes
my %user;
%user = ("fname", "Foo", "lname", "Bar");
my %user = (
"fname", "Foo",
"lname", "Bar",
);
my %user = (
fname => "Foo",
lname => "Bar",
);
print $user{"fname"}, "\n";
print $user{fname}, "\n";
my $key = "fname";
print $user{$key}, "\n";
$user{fname} = 'Moo';
$user{email} = 'foo@bar.com';