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Summary

During this hour you learned the basics of references. First, you learned how to take references to Perl's basic data types: scalars, arrays, and hashes. Then, using those references, you learned how to manipulate the original structures. You then learned that it was possible to take a reference to a hash or array that didn't have a variable name associated with itanonymous storage. Finally, you learned how to use references to create complex data structures and where to find a cookbook of ready-made data structures.

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