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  1. or download this
    # Method 1: With an explicit declaration

...
$v{u} = "hello";
print $v{u}, "\n";
dd %v;    # Show the contents of the hash
  2. or download this
    # Method 2: Without a declaration

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