Softpanorama

Home Switchboard Unix Administration Red Hat TCP/IP Networks Neoliberalism Toxic Managers
May the source be with you, but remember the KISS principle ;-)

Beginning Perl

Good, abeit slightly overcomplicated introduction to Perl

This is a good book which is a unique mix of intro and intermediate material. It is now also available as electronic edition including Kindle Edition from Amazon.

It is suitable for one semester course in Perl. Version covered is Perl 5.8 not 5.10. Some issues covered such as dereferencing of arguments in subroutines are rarely covered even in intermediate books. This is definitely much better and cheaper book then Learning Perl (ignore the lemmings effect in Amazon reviews of this pretty weak book).

The strong point of the book is the set of examples (you can download them) which illustrates basic material of each chapter. Running them is a must for studying Perl with this book.

Examples are often sometimes overcomplicated (like most Perl books authors Simon Cozen tries to impress reader with his knowledge of intricacies of Perl and often loses the sense of proportion; but he is not as bad as Randal Schwartz who is a pathological "overcomplicator" ;-). Still they are very helpful in understanding the language. A very useful exercise that I successfully tried with my students is the simplification of examples provided.

Due to this the book is the best for programmers moving from other languages then to "plain vanilla" beginners. It might be also useful for Unix system administrators who know Unix shell reasonably well.

The range of topics covered is really impressive:

Introduction
Chapter 1: First Steps In Perl
Chapter 2: Working with Simple Values
Chapter 3: Lists and Hashes
Chapter 4: Loops and Decisions
Chapter 5: Regular Expressions
Chapter 6: Files and Data
Chapter 7: References
Chapter 8: Subroutines
Chapter 9: Running and Debugging Perl
Chapter 10: Modules
Chapter 11: Object-Oriented Perl
Chapter 12: Introduction to CGI
Chapter 13: Perl and Databases
Chapter 14: The World of Perl
Appendix A: Regular Expressions
Appendix B: Special Variables
Appendix C: Function Reference
Appendix D: The Perl Standard Modules
Appendix E: Command Line Reference
Appendix F: The ASCII Character Set
Appendix G: Licenses
Appendix H: Solutions to Exercises
Appendix J: Support, Errata and P2P.Wrox.Com

Simon Cozens definitely knows the language well and it shows.

The book covered a lot of intermediate topics like references, databases, OO concepts, CGI, etc.

Lists and hashes are explained well although the author often abuses lists and uses them where they do not belong. Both are introduced early in the book.

Regular expressions are explained OK. I like the approach the author takes in writing a small program which demonstrates various concepts.
The book covers both DBM databases and SQL databases. MySQL is used to demonstrate how PERL interacts with an SQL database. Most Linux distributions have MySQL installed by default, the book also contains useful information about installation and basic configuration, that helps to make MySQL up and running.

DBM, which are simple key-value pair databases are covered in more detail. The author demonstrates complex data storage using DBM files. Normally DBM can only store a single value for any key.

As for SQL only fairly simple SQL commands are covered, but then it is an introductory books and it's naive to expect full SQL coverage.

In CGI chapter the author introduces CGI environment variables and HTTP commands such as GET and POST first. Then he switches to the CGI.pm module which is standard module in Perl but unfortunately introduces a lot of overcomplexity in the topic. CGI security issues are also mentioned.

Basic networking is covered in chapter 14. The Net::FTP module is covered in chapter 11, Object-Oriented Perl which makes this chapter simultaneously an extension of networking chapter.

The set of examples from the book greatly enhances the value of the book. It is mostly error free and immediately usable. Also each chapter has exercises with the answers. That makes the book perfectly suitable for the classroom.

All-in-all this is a solid introduction to Perl which is attractive not only due to the price.



Etc

Society

Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy

Quotes

War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda  : SE quotes : Language Design and Programming Quotes : Random IT-related quotesSomerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose BierceBernard Shaw : Mark Twain Quotes

Bulletin:

Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

History:

Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

Most popular humor pages:

Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor

The Last but not Least


Copyright © 1996-2018 by Dr. Nikolai Bezroukov. www.softpanorama.org was initially created as a service to the (now defunct) UN Sustainable Development Networking Programme (SDNP) in the author free time and without any remuneration. This document is an industrial compilation designed and created exclusively for educational use and is distributed under the Softpanorama Content License. Original materials copyright belong to respective owners. Quotes are made for educational purposes only in compliance with the fair use doctrine.

 

FAIR USE NOTICE This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner. We are making such material available to advance understanding of computer science, IT technology, economic, scientific, and social issues. We believe this constitutes a 'fair use' of any such copyrighted material as provided by section 107 of the US Copyright Law according to which such material can be distributed without profit exclusively for research and educational purposes.

This is a Spartan WHYFF (We Help You For Free) site written by people for whom English is not a native language. Grammar and spelling errors should be expected. The site contain some broken links as it develops like a living tree...

You can use PayPal to make a contribution, supporting development of this site and speed up access. In case softpanorama.org is down you can use the at softpanorama.info

Disclaimer:

The statements, views and opinions presented on this web page are those of the author (or referenced source) and are not endorsed by, nor do they necessarily reflect, the opinions of the author present and former employers, SDNP or any other organization the author may be associated with. We do not warrant the correctness of the information provided or its fitness for any purpose.

The site uses AdSense so you need to be aware of Google privacy policy. You you do not want to be tracked by Google please disable Javascript for this site. This site is perfectly usable without Javascript.

Last modified: September 12, 2017