Skip to Main Content
Perl by Example, Fourth Edition
book

Perl by Example, Fourth Edition

by Ellie Quigley
November 2007
Intermediate to advanced content levelIntermediate to advanced
1008 pages
20h 15m
English
Pearson
Content preview from Perl by Example, Fourth Edition

Chapter 11. How Do Subroutines Function?

How Do Subroutines Function?

Subroutines/Functions

In addition to the large number of Perl functions already available, you can create your own functions or subroutines. Some languages distinguish between the terms function and subroutine. Perl doesn’t. If you say “subroutine,” everyone will know you are talking about a “function,” and if you say “function,” everyone will know you are talking about a “subroutine.”[1] Technically, a function is a block of code that returns a value, whereas a subroutine is a block of code that performs some task, but doesn’t return anything. Perl subroutines and functions can do both, so we’ll use the two ...

Become 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,
and much more.
Start your free trial

You might also like

Perl in a Nutshell, 2nd Edition

Perl in a Nutshell, 2nd Edition

Nathan Patwardhan, Ellen Siever, Stephen Spainhour
Programming Perl, 3rd Edition

Programming Perl, 3rd Edition

Larry Wall, Tom Christiansen, Jon Orwant
Learning Perl, 7th Edition

Learning Perl, 7th Edition

Randal L. Schwartz, brian d foy, Tom Phoenix
Minimal Perl

Minimal Perl

Tim Maher

Publisher Resources

ISBN: 9780132381826Purchase book