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Here's how to proceed: It's wrong because you'll see stringified references instead of your data. The pointer arrows give us a nice way to access a single element, but no such convenience exists for slices.

This excerpt is from Programming Perl, Third Edition.

Programming Perl is not just a book about Perl; it is also a unique introduction to the language and its culture, as one might expect only from its authors.

See There are many kinds of nested data structures.

Perl provides for free many of the data structures that you have to build yourself in other programming languages.The stacks and queues that budding computer scientists learn about are both just arrays in Perl. And many of the tree structures in the world are built only to provide fast, dynamic access to a conceptually flat lookup table.

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