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Chapter 5.  References and Scoping

 
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Chapter 5. References and Scoping

We can copy and pass around references like any other scalar. At any given time, Perl knows the number of references to a particular data item. Perl can also create references to anonymous data structures (structures that do not have explicit names) and create references automatically as needed to fulfill certain kinds of operations. Let's look at copying references and how it affects scoping and memory usage.


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