Categories
Miscellaneous

Several Small Bits of News

A few little bits and pieces, none of which justify a blog post to themselves.

blogs.perl.org

Some of you will have seen that Evozon’s grant to replace blogs.perl.org was cancelled a couple of months ago. This made me sad as I (along with the rest of the blogs.perl.org team) really want to see the current, fragile, set-up replaced as soon as possible.

I’m happy to see that a new grant proposal has been received from a team at Booking.com. They want to take Evozon’s work, along with some other improvements that they’ve made in house and complete the project.

I’d really like to see this grant approved and the project completed. Please feel free to add your comment to the proposal.

Perl News

Who remembers use.perl.org? For many years it was the best place to go for both Perl news and Perl blogs. The idea behind blogs.perl.org was to replace the blogging part of that site and a few years ago, Leo Lapworth and I built perlnews.org to replace the other part of the equation.

Unfortunately, neither of us really had the time to invest in the site and it never really took off. These days there are plenty of other places to get your Perl news, so we’ve taken the decision to close the site down. The existing stories will remain online and I might replace the current WordPress installation with a static site at some point in the future.

The Perl Conference in Amsterdam

A couple of my recent blog posts have been about deciding what training course to run alongside The Perl Conference (The Conference Formerly Known As YAPC Europe) in Amsterdam.

Unfortunately, my plans had a big collision with Real Life and I’ve realised that it’s just unrealistic for me to have enough time to prepare for the conference. So, sadly, I’ve made the decision that I won’t be in Amsterdam this August.

I’m sure it’ll be a great conference though and I wish the organisers the best of luck with it.

Web Application Development in Perl 6

Gabor asked me to give him a quotation explaining why I had backed his Indiegogo campaign to write a book on web development with Perl 6. This is what I sent him:

I’ve been largely ignoring Perl 6 development since the project started in 2000. I figured that I would have plenty of chance to catch up with it before clients started expecting me to know it. The official release of Perl 6 eighteen months ago means that the time is now right for me to start taking an interest. A lot of the code I write drives web sites, so I want to get up to speed with web development in Perl 6 quickly. That’s why I supported this crowdfunding campaign – I want to read this book and I think that Gabor is the right person to write it.

I think this will be a very useful book. You might consider backing it too.

CPAN Badges

I’m a big fan of the badges from shields.io. I use their CPAN badge on my dashboard. Unfortunately, this badge has stopped working – it just says “cpan | invalid”.

I did some investigation and discovered this was because they use the MetaCPAN v0 API – which has now been switched off. It was simple enough to patch the code to use the v1 API. I’ve sent them a pull request, but it hasn’t been accepted yet.

Categories
Training

Training Debrief

During the second week of February, I ran my (approximately) annual public Perl training courses in association with FlossUK. Things were organised slightly differently this year. Previously we’ve run two two-day “general purpose” courses – one on Intermediate Perl and one on Advanced Perl. This year we ran four courses, each of which were on a more specific technology. There were one-day courses on Moose, DBIx::Class and testing and a two-day course on web development.

Class numbers weren’t huge during the week. We had about six people on each of the days. That’s a large enough class to get plenty of discussion and interaction going but, to be honest, I’d be happier if we got a few more people in. The attendees were split pretty much down the middle between people who working for commercial organisations and people who worked for universities. I’m sorry to report that there were no women booked on any of the courses this year.

As is often the case on these courses most of the attendees had been using Perl for a long time and were pretty comfortable with some quite advanced Perl features. But, for various reasons, they simply hadn’t had the time to investigate some of the newer Perl tools that would have made their lives much easier. I often get people at these courses telling me that the best thing about the course is just having a day set aside where they can try out cool new technologies that they have heard of without the worry of someone calling them away to deal with some vital production issue (this, incidentally, is also why most trainers far prefer off-site training courses).

We started on day one with Moose. Most of them had used “classic” Perl OO techniques and were well aware of how baroque that can become. They were therefore very interested in the more declarative approach that Moose gave them. By the end of the day our Dalek class was using roles, traits, type coercion and many other useful Moose features.

Day two was DBIx::Class. Everyone was using a database of some kind and all of them were using DBI to interface to their database. I really enjoy introducing people like that to DBIx::Class. Once they’ve run dbicdump and have generated classes for their own databases most people’s eyes light up when they see ho much easier their code can become. As a bonus, this class contained no-one who needed to be persuaded of the benefits of defining foreign keys in your DDL and making use of referential integrity checks.

The third day was testing. I mean, it was about testing – not that it was particularly difficult. The class was full of people who knew the benefits of testing but who were maintaining large codebases with hardly any (in some cases no) tests. In the morning we looked at how simple the Perl testing framework is, did a quick survey of some useful testing modules on CPAN and even looked at writing our own testing modules. In the afternoon we expanded that to look at mocking objects and Test::Class. I think the most popular sections were when I introduced Devel::Cover and the concept of continuous integration. I encouraged them to write even just a few tests and to hook their test suite up to a highly visible Jenkins job. If you make your lack of test coverage obvious, then other people in the team can be encouraged to help improve it out of sheer embarrassment.

Thursday was the first day of the two-day course on web development. The first day concentrated on PSGI and Plack. We looked at what they are and how they make web development simpler. We also looked at ways to run non-PSGI applications in a PSGI environment in order to benefit from PSGI’s advantages. This seemed to really engage a couple of people in the class who used a practical session at the end of the day to start working to get their own legacy apps running under PSGI. I was particularly pleased when, the next morning, one of them told me that he had continued to work on the problem overnight and that he had got a huge system that used a combination of CGI and mod_perl working under PSGI. He was really happy too.

On the final day, we looked at web frameworks in Perl. The morning was all about Dancer2. We started by building a small web app and I showed them how simple it was to interface with a database and to add authentication to the system. Later on we added an API to the app so that it could return JSON or XML instead of web pages. Early in the afternoon, I took that a step further and demonstrated Web::Machine and WebAPI::DBIC. The rest of the afternoon was about Catalyst. We built another app (similar to the Dancer on from the morning) using the standard Catalyst tutorial as a basis. I’m not sure how well this went, to be honest. Following the simplicity of Dancer with the (relative) complexity of Catalyst wasn’t, perhaps, the best advert for Catalyst.

But, all in all, I think the week went really well. I sent a small but enthusiastic group of people back to their offices with a new interest in using Modern Perl tools in their day-to-day work. And, perhaps more usefully, I think that many of them will be getting more involved in the Perl community. A few of them said “see you at the LPW” as they left.

I’m running a half-day workshop on Modern Perl Web Development at  the FlossUK Spring Conference next month. Other than that, I don’t have any public courses planned. But if you think that your company would find my training useful, then please get in touch.

Categories
Training

Public Training in London – February 2016

For several years I’ve been running an annual set of public training courses in London in conjunction with FLOSS UK (formerly known as UKUUG). For various scheduling reasons, we didn’t get round to running any this year, but we have already made plans for next year.

I’ll be running five days of training in central London from 8th – 12th February. The courses will take place at the Ambassador’s Hotel on Upper Woburn Place. Full details are in the process of appearing on the FLOSS UK web site, but the booking page doesn’t seem to be live yet, so I can’t tell you how much it will cost.

We’re doing something a little different this year. In previous years, I’ve been running two generic two-day courses – one on intermediate Perl and one on advanced Perl. This year we’re running a number of shorter but more focussed courses. The complete list is:

  • Object Oriented Programming with Perl and Moose (Mon 8th Feb)
  • Database Programming with Perl and DBIx::Class (Tue 9th Feb)
  • An Introduction to Testing Perl Programs (Wed 10th Feb)
  • Modern Web Programming with Perl (two day course – Thu/Fri 11th/12th Feb)

This new approach came out of some feedback we’ve received from attendees over the last couple of years. I’m hoping that by offering this shorter courses, people will be able to take more of a “mix and match” approach and will select courses that better fit their requirements. Of course, if you’re interested, there’s no reason why you shouldn’t come to all five days.

I’ll update this page when I know how much the courses will cost and how you can book. But please put these dates in your calendar.

Update: And less than 24 hours after publishing this blog post, the booking page has gone live.

Places are £300 a day (so £600 for the two-day course on web programming) and there’s a special offer of £1,320 for the full week.

Prices are cheaper (by £90 a day) for members. And given that an annual individual membership costs £35, that all sounds like a bit of a no-brainer to me.