Perl Raspberry Pi ebook sample chapter: intro

With the campaign for the Perl Raspberry Pi ebook underway, we’re releasing a few sample chapters. First one for today is a short intro chapter. Tomorrow, we’ll be releasing one with more meat, covering the basics of the Raspberry Pi range and some other tools you might need to get started. For now, here’s the intro:


Introduction

Welcome! If you’re reading this, you’ve probably been using Perl for a while
and heard about the wonderful Raspberry Pi. If you haven’t programmed Perl
before, I suggest starting with Learning Perl by Randal L. Schwartz, brian d
foy, and Tom Phoenix. With that said, we try to keep the examples in this book
as simple and concise as possible, sticking to the most basic of expressions
wherever possible. Even without previous Perl experience, you
should be able to grasp the concepts we’ve presented within if you’ve done
any programming in other languages.

No previous electronics experience is necessary. We’ll be covering some of the
basics where appropriate. Most of the projects can be completed without any
soldering. In others, minimal soldering skills may be necessary. However,
being able to solder is a valuable skill to have if you are to grow further
in the field of electronics.

About the Raspberry Pi

In 2012, the Raspberry Pi Foundation was started by employees of Broadcom,
intending to use one of Broadcom’s inexpensive System on a Chip (SoC) fabs
to create a low-cost computer for education. Hobbyists quickly grabbed them
up and started hacking away. Today, the line has expanded to several models,
ranging from the $5 Pi Zero, to the $35 Pi3 (most recently, the Pi3B+).

About Perl

Perl was released by Larry Wall in 1987 inspired by a combination of several
other programming languages. A major revision to Perl 5 was done in 1994. Work
on Perl 6 began in 2000 as a completely separate language from Perl 5 (often
referred to as its “sister” language). Since then, work on Perl 5 has
continued. We’ll be using Perl 5 in this book. We recommend ensuring the most
recent version of Perl is installed before attempting the projects outlined in
this book, that version being 5.26 at the time of writing.

The language was important for the early web, being used in many of the first
CGIs, a simple way to write server applications. Since then, it has evolved
with the rest of the web and is still used by several large companies today.

It also continues as popular language for managing systems, and is installed
by default on the Raspberry Pi.

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