September 2002
Intermediate to advanced
496 pages
10h
English
Content preview from Programming PERL in the .NET EnvironmentBecome 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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Returning a Value from a Subroutine
In the previous section, we concentrated on parameter issues. However, you can think of a function as a black box with inputs and outputs. The inputs are the parameters and the outputs are the value or values returned from the subroutine. In this section we concentrate on the values returned from a subroutine.
All Functions Return Something
In languages such as C, C++, and Java, a specific function either returns a value or it does not. In these languages, you need to explicitly specify a return type for those functions returning a value, and you also need to explicitly specify the type void for those functions that do not return a value.
In Perl, we would like to achieve the same behavior. However, as you ...
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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.