# Method 1: With an explicit declaration

use strict;
use Data::Dump;

my %v;    # Hash declaration
$v{u} = "hello";
print $v{u}, "\n";
dd %v;    # Show the contents of the hash

##</code><code>##

# Method 2: Without a declaration

# No "use strict" here!
use Data::Dump;

$v{u} = "hello";
print $v{u}, "\n";
dd %v;    # Show the contents of the hash