July 2005
Beginner
312 pages
9h 23m
English
Content preview from Learning Perl, Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Lists and Arrays
Perl has a number of features that make it easy to manipulate an entire list or array.
map and grep
In Chapter 16, we mentioned the map and grep list-processing operators. They can do more than we could include here. See the perlfunc manpage for more information and examples, and check out the Alpaca for more ways to use map and grep.
The splice Operator
With the splice operator, you can add items to the middle of an array or remove them, letting the array grow or shrink as needed. (Roughly, this is like what substr lets you do with strings.) This effectively eliminates the need for linked lists in Perl. See the perlfunc manpage.
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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.