Perl Maven

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Perl tutorials and courses

Modern Perl Web Frameworks

  • Mojolicious light-weight web framework with rainbows and unicorns.
  • Perl Dancer light-weight web framework to rock.
  • Catalyst The MVC web framework of Perl.
  • PSGI/Plack, the low-level superglue between Perl web application frameworks and web servers.
  • CGI, the Common Gateway Interface, for old-school web applications.

Object Oriented Perl

  • OOP, the classic way to write Object Oriented Perl code.
  • Moo, the Minimalist Object Oriented system for Perl.
  • Moose, the 'post modern' Object Oriented system for Perl.

Other Series

Projects and Collections

Code-Maven series

If you are a beginner, or would like to refresh your Perl programming knowledge, you can go over the Perl tutorial or watch the Beginner Perl Maven video course.

If you need to maintain a large piece of software written in Perl by other people in the last 5-10-15 years, that's a challenge. Especially if you did not get proper training in Perl. You are probably limited to a specific and old version of Perl. Check out, the Perl tutorial! You can probably skip the part about installing Perl, but the rest of the tutorial will be relevant for you.

Perl is often used in Test Automation. If you work in this field, or if you'd like to work in this field (it is much more fun to find bugs in other people's code than in yours :), then you can read the Perl tutorial and the series on Test Automation using Perl.

If you build new web applications - either privately or inside a company - you can start by reading the article comparing CGI, mod_perl and PSGI. From there you can go on reading the generic Perl tutorial or the articles on Mojolicious, Perl Dancer, Catalyst, PSGI/Plack, or even CGI, the Common Gateway Interface, for old-school web applications.

Recent Articles

Getting Started with Perl::Critic (the linter for Perl)

It seems I've written quite a few articles about Perl::Critic, but still when I got to a new client I was not sure how to get started. I had to assemble it from several of my blog-post and from sever open source projects I am involved in. So here is a quick starter that works for me.

Getting Started with Perl::Critic (the linter for Perl)

Testing Perl CGI application

Unfortunately has been removed from core Perl, but there are still lots of applications out there that use I even encountered one built in 2017 by people who have not learned newer techniques. The thing is, CGI is perfectly good for small things and for trying out new concepts without forcing the developer to learn some new technology.

Anyway, when I got to this client, I had to help them write tests for their CGI-based application.

Testing Perl CGI application

each - iterate over Perl hash elements pair-by-pair

In most of the cases when we iterate over the elements of a hash we use the keys function. At least that's my preferred method.

However, sometimes, epecially when the hash is big, we migh prefer to use the each function.

each - iterate over Perl hash elements pair-by-pair