Here's a quick primer on reading Perl data structures:

• 'something' => (any data structure) - a hash key/value pair.
• [ (a list of things) ] - an arrayref,
• { key => value, .. } - a hashref
• ( key => value, .. ) - a hash

So, using those rules, your 'hostattributes' key has a value of an arrayref that contains two elements, each of which is a hashref, each of which contains five key/value pairs. Because this is a hash, the keys can appear in any order.

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