Array and hash types in perl likely evolved bottom-up from the lower-level data structures of the same name. Other languages use terms like "List" and "Associa

Array and hash types in perl likely evolved bottom-up from the lower-level data structures of the same name. Other languages use terms like "List" and "Associative Array" for their abstract data types to differentiate from the implementation techniques. And yes, lists and associative arrays have slightly different properties, as do sets, stacks, and queues.