Perl tutorials and courses
- Perl Tutorial just a plain Perl tutorial. Nothing fancy.
- Beginner Perl Maven video course slidecast of the training material.
- Advanced Perl Maven video course mixed slidecasts, screencasts and plain articles.
- Test Automation using Perl for people who really want to sleep well.
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.
- Perl and MongoDB, the NoSQL database used in Perl programs.
- AnyEvent, asynchronous programming.
- Net::Server the framework to build TCP/IP servers.
- MetaCPAN - articles for CPAN users, CPAN authors, client developers, and MetaCPAN developers.
- Perl Maven TV Show is a collection of interviews with Perl developers.
- SVG - Scalable Vector Graphics
Projects and Collections
- The search.cpan.org cloning project - Implementing a CPAN search engine using Plack/PSGI with MetaCPAN back-end.
- Command line phonebook with MongoDB and Moo
- Indexing e-mails in an mbox
- Counter Examples Various solution on the simple task of building a counter.
- Becoming a co-maintainer of a CPAN module - refactoring a CPAN module
- Perl::Critic lint-like static analyzer for Perl.
- Implementing a Markua Parser in Perl 5
- Angular JS
- Flask, the Python microframework.
- Groovy, the programming language used for Jenkins pipelines.
- Jenkins, the automation server used for Continuous Integration and Continuous Delivery.
It is often a good idea to have your configuration files or your code contain relative pathes to various locations as that makes it easy to install your application in different places.
It also makes it a lot easier to run two totally separate copies of the same program on the same machine.
However, when accessing the files it is often better to use the absolute path-es.
So the question arises: How can you convert a relative path to an absolute path?
In very rare cases you might need very some very fine-tuned file reading operations in which after reading some part of a file you might need to re-read that part, or you might need to jump over large sections of a file. The two tools for this are tell and seek.
tell can, well, tell you the current position of the filehandle. How far are the reader head from the beginning of the file.
seek can move the current position of the filehandle very fast.
After writing the article on comparing the speed of grep with Python regexes and arriving to the conclusiong that grep is 50-100 times faster than Python I thought, what about Perl?