Ruby Meditation #22 in Dnipro

Meditation will be held on May 19, at Parle, Troitska St, 21 g, Dnipro
27 April 2018   1411

On Ruby Meditation #22 you will hear about helpful tools and gems for building Slack apps, examples how to build functional architecture with ruby, which place takes Ruby on Rails among alternatives in 2018 and much more.

Come and get your portion of good mood, knowledge, professional communication and tasty lunch :)

Share your positive experience and best practices on this Ruby Meditation #22. If you have any work issues you cannot solve, our community will gladly help you to find the best way out in live discussion at Lightning talks session. You may also try yourself as a speaker with a short 5-10 mins talk. Fill in this form.

Programme

Anna Shcherbinina

Topic: "Docker + GPU. Not about mining."

Anna Shcherbinina
Anna Shcherbinina

Just before Christmas we launched a new body-measurement feature for our shapify.me project. A person goes into the 3D booth, gets scanned, and the body-measurements are calculated with the 3D scan data. We couldn't avoid using a GPU with these calculations.

How to install this branch of processing into our elegant scaling pipeline? When you're dealing with 3D scans you should remember two things: it's expensive and time-consuming. By the way, its workload fluctuates throughout the days. The easiest solution for us was to use Docker.

This speech is not about mining, but the most helpful articles for us were ones such as "Building your own mining farm". That's because we use quite a similar infrastructure.

GPU, Docker, scaling. What we achieved, where we failed, and what it became of it in the end is all included in my speech.
 

Anna Shcherbinina

Head of Web, Artec3D, Luxembourg

Kirill Shevchenko

Topic: "Building Slack apps with Ruby."

Kirill Shevchenko
Kirill Shevchenko

Overview of Slack APIs. Their features, restrictions, and bottlenecks. Which API is right for you? Helpful tools and gems for building Slack apps.
 

Kirill Shevchenko

Ruby/JS Developer

Valentine Ostakh

Topic: "Functional objects in Ruby: new horizons "

Valentine Ostakh
Valentine Ostakh

Overview of functional programming concepts.  What is functional objects. Examples how to build functional architecture with ruby.
 

Valentine Ostakh

Ruby/JS Developer

Leonid Shevtsov

Topic: "A polyglot's view of Ruby on Rails"

Leonid Shevtsov
Leonid Shevtsov

Nowadays, it's hip to switch from Rails to other languages and frameworks. Leonid, too, has abandoned Rails, played the field a bit, and has come around to occasionally but consistently picking Rails for some projects. What's the modern reason to use Rails? What are the strengths of Ruby and Rails and how to build upon them? When you should really jump to some other platform? Let's answer these questions in a true Ruby meditation.
 

Leonid Shevtsov

Systems Architect

Oleksii Dashkevych

Topic: "Project development - preparing hell dish together"

Oleksii Dashkevych
Oleksii Dashkevych

The recipe is averaged, because of many variations. We take some Ruby code and add Rails magic, Postgresql on top. Add Docker for viscosity. Then put this on AWS EBS pan and start frying. It's all roasted until burning deadlines and generously watered with bugs, serves to the customer. They start eating. Eat and whisper: “This is an awesome product!”. At the same time, he forehead is sweating. Kindly offer to fix bugs, but we refuse and put them in JIRA. Do I need to talk about what kind of feedback comes then? Tasks with such recipes, that double estimated.
 

Oleksii Dashkevych

Ruby/JS Developer

Thanks to the sponsors: Ruby Garage, Railsware, Aejis.

Students, who interested in ruby and have a willingness to visit Ruby Meditation, will get a discount 50% with promocode ‘student’. Please send your student ID’s scan to make your registration on the event faster.

If you are a parent of a small baby (0-3 years) on maternity leave and you want to learn more about ruby development you can get a special discount for a ticket with promo code ‘GrowWithYourKid’. Please send your document's scan or take it with you to approve your status and make your registration in the event faster.

If you have any questions or suggestions, don't hesitate to contact us via cell phone: 099 202 6308 or by email: rubymeditation@gmail.com

More details on website.

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Git 2.20 to be Available

Let's check updates and features of new version control system
11 December 2018   369

Distributed version control system Git has received another update. In order for Git 2.20 to appear, 83 developers made changes 962 to the zcode. According to the team, this is an order of magnitude higher than the same figure in the largest release of the 2.x.x branch.

The git branch -l command is now a shortened version of the git branch --list - it used to help run reflog during the creation of a new branch. Developers have limited the launch of git fetch: it is only possible with an indication of --force, to avoid problems with consistency when updating the link.

The git help -a and git help -av commands to help newbies display a more verbose output. To return to the old view, just type git help - no-verbose -a. In git send-email, it is possible to extract lines with addresses that end with “-by” from signatures. This is an incompatible change, and it can be disabled by adding to the --suppress-cc = misc-by command.

  • If the repository contains files whose addresses differ only in the case of letters, a warning will be displayed during the execution of git clone.
  • The git format-patch command received the --interdiff and --range-diff options, which in a note or comment list the differences between the existing and previous versions.
  • git mailinfo learned how to recover code patches sent by email with plain text and damaged due to hyphenation.
  • git multi-pack-index now fixes damage in .midx files.
  • Creating experimental commit-graph files for large repositories takes a lot of time, so the developers have provided a form of output about the state of the process.

Performance and Development Support

  • For working builds, the -Wunused-function compilation option is provided.
  • git submodule update is completely rewritten in C.
  • One of the continuous integration (CI) tests, designed to work with the unusual/experimental/random settings, now supports midx and commit-graph files.
  • A new mechanism for finding objects among a large number of pack-files. It relies on combining all .idx files into one.

The previous version of the system was released in September 2018.