June 2005
Beginner
480 pages
10h 31m
English
Content preview from SAMS Teach Yourself Perl in 24 Hours THIRD EDITION
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Workshop
Quiz
| 1: | Variables are interpolated inside qq quotes.
|
| 2: | What value is stored in $c after running the following code?
$a=6; $a++; $b=$a; $b--; $c=$b;
|
| 3: | Concatenation can be performed only with the concatenation operator (.).
|
Answers
| A1: | a. True. qq behaves in every way like a pair of double quotation marks. This means it can interpolate variables. |
| A2: | a. $a is set to 6. $a is then incremented to 7, and assigned to $b. $b is decremented to 6, and assigned to $c. |
| A3: | b. False. A motto in the Perl community is “There Is More Than One Way To Do It” (TIMTOWTDI). Concatenation can be performed by including two (or more) scalars in a double-quoted string, as follows:
qq($a$b$c); |
Activities
Write a short program that prompts ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.