Hour 4. Stacking Building Blocks: Lists and Arrays
What You'll Learn in This Hour:
How to sort and print arrays
How to split scalars into arrays and join arrays back into scalars
Scalars are Perl's singular nouns. They can represent any one thing—a word, a record, a document, a line of text, or a character. Often, though, you need to talk about collections of things—many words, a few records, two documents, fifty lines of text, or a dozen characters.
When you need to talk about many things in Perl, you use list data. You can represent list data in three different ways: by using lists, arrays, and hashes.
Lists are the simplest representation of list data. A list is simply a group ...
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