March 2005
Intermediate to advanced
1064 pages
34h 51m
English
Content preview from Pro Perl
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CHAPTER 5Arrays, Hashes, References, and Typeglobs
Having introduced scalars in Chapter 3, we now consider in this chapter the remaining data types. Specifically, this chapter introduces arrays, hashes, references, and typeglobs. We will also examine the more complex data that can be created by mixing data types. Later in the chapter, we will also see how to define scalar, list, and hash constants, as well as check for their existence. Finally, we discuss one other special value, the undefined value.
Lists and Arrays
A list is a compound value that may hold any number of scalar values (including none at all). Each value, or element, in the list is ordered and indexed, it is always in the same place, and we can refer to it by its position in ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.