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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>wroc_love.rb 2017 in a nutshell</title>
<meta name="description" content="wroc_love.rb 2017 in a nutshell">
<meta name="author" content="Tomasz Pajor">
<meta name="apple-mobile-web-app-capable" content="yes">
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<body>
<div class="reveal">
<div class="slides">
<section>
<img src="img/wrocloverb.png" alt="" style="border: none; box-shadow: 0 0 0 0 #fff; width: 30%"/>
<h3>wroc_love.rb 2017 in a nutshell</h3>
</section>
<section>
<h4>A bit about me</h4>
<ul>
<li>I <3 ruby, devops and whiskey</li>
<li>all in for open-source software</li>
<li>quality and automation are very important</li>
<li>i don't have a blog</li>
<li>i do consulting</li>
</ul>
</section>
<section>
<img src="img/amicus.png" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<img src="img/coditsu_page.svg" alt="" style="border: 0; box-shadow: none; width: 60%;" />
<p>comprehensive platform for insightful code analysis</p>
</section>
<section>
<img src="img/homebrew.png" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<img src="img/wroclove_hall.jpg" alt="" style="border: 0; box-shadow: none;" />
<ul>
<li>March 17-19th 2017, Wrocław Poland</li>
<li>10 speakers, 10 talks, 2 panels</li>
<li>after parties ;)</li>
</ul>
</section>
<section>
<h2>when I was preparing this talk</h2>
</section>
<section>
<h2>I realized that I don't like doing this kind of talks</h2>
</section>
<section>
<img src="img/speakers/speaker-maciej-mensfeld.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>KARAFKA - PLACE WHERE RUBY, RAILS AND KAFKA MEET TOGETHER</h4>
<h5>Maciej Mensfeld</h5>
</section>
<section>
<img src="img/speakers/speaker-maciej-mensfeld2.jpg" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<ul>
<li>kafka - is used for building real-time data pipelines and streaming apps</li>
<li>karafka - microframework which was designed to simplify Kafka based applications development</li>
</ul>
</section>
<section>
<ul>
<li>https://kafka.apache.org/</li>
<li>https://github.com/zendesk/ruby-kafka</li>
<li>https://github.com/karafka/karafka</li>
</ul>
</section>
<section>
<img src="img/speakers/speaker-mariusz-gil.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>MACHINE LEARNING FOR THE RESCUE</h4>
<h5>Mariusz Gil</h5>
</section>
<section>
<h2>Machine learning is not a single run of an algorithm. It's a process.</h2>
</section>
<section>
<h2>ML process</h2>
<ul>
<li>define a problem</li>
<li>gather your data</li>
<li>understand your data</li>
<li>prepare data for ml</li>
<li>select & run algo(s)</li>
<li>tune algo(s) parameters</li>
<li>select final model</li>
<li>validate final model</li>
</ul>
</section>
<section>
<h2>list of ruby gems for ML/DS http://gems.sciruby.com</h2>
</section>
<section>
<img src="img/speakers/speaker-mariusz-gil2.jpg" alt="" style="border: 0; box-shadow: none; width: 50%;" />
</section>
<section>
<img src="img/spree_logo.png" style="border: none; box-shadow: 0 0 0 0 #fff; width: 50%"/>
<h3>3.2 was released</h3>
</section>
<section>
<h2>Fun facts</h2>
</section>
<section>
<h3>A bit of numbers</h3>
<ul>
<li>3 026 876 bytes of code</li>
<li>0.63% monthly growth</li>
<li>104594 lines of code</li>
<li>75.9% code in Ruby</li>
<li>4 guys handling more than 92% of code (last month)</li>
<li>1 guy with > 50% of current code base (total) ownership - Sean Schofield</li>
</ul>
</section>
<section>
<img src="img/rubocop.png" style="border: none; box-shadow: 0 0 0 0 #fff; width: 70%"/>
<h3>Spree uses Rubocop!</h3>
</section>
<section>
<img src="img/rubocop.png" style="border: none; box-shadow: 0 0 0 0 #fff; width: 70%"/>
<h4>But it doesn't! :(</h4>
<p>
<small>
AccessorMethodName ActionFilter Alias ArrayJoin AsciiComments AsciiIdentifiers Attr BlockNesting CaseEquality CharacterLiteral ClassAndModuleChildren ClassLength ClassVars ColonMethodCall CommentAnnotation CyclomaticComplexity Delegate DeprecatedHashMethods Documentation DoubleNegation EachWithObject EmptyLiteral Encoding EvenOdd FileName FlipFlop SpecialGlobalVars StringLiterals VariableInterpolation TrailingCommaInLiteral
</small>
</p>
</section>
<section>
<img src="img/rubocop.png" style="border: none; box-shadow: 0 0 0 0 #fff; width: 70%"/>
<h4>But it doesn't! :(</h4>
<p>
<small>
FormatString GlobalVars GuardClause IfUnlessModifier IfWithSemicolon InlineComment Lambda LambdaCall LineEndConcatenation MethodLength ModuleFunction NegatedIf NegatedWhile Next NilComparison Not NumericLiterals OneLineConditional OpMethod ParameterLists PercentLiteralDelimiters PerlBackrefs Proc RaiseArgs RegexpLiteral SelfAssignment SingleLineBlockParams SingleLineMethods SignalException
</small>
</p>
</section>
<section>
<img src="img/rubocop.png" style="border: none; box-shadow: 0 0 0 0 #fff; width: 70%"/>
<h4>But it doesn't! :(</h4>
<p>
<small>
TrailingCommaInArguments TrivialAccessors VariableInterpolation WhenThen WhileUntilModifier WordArray AmbiguousOperator AmbiguousRegexpLiteral AssignmentInCondition ConditionPosition DeprecatedClassMethods ElseLayout HandleExceptions InvalidCharacterLiteral LiteralInCondition LiteralInInterpolation Loop ParenthesesAsGroupedExpression RequireParentheses UnderscorePrefixedVariableName Void
</small>
</p>
</section>
<section>
<h3>So what would happen with a non-agressive Rubocop config?</h3>
<h4>(with Rubocop Rspec and Rubocop Rails)</h4>
<img src="img/rubocop_res.png" style="border: none; box-shadow: 0 0 0 0 #fff;"/>
</section>
<section>
<img src="img/speakers/speaker-sebastian-sogamoso.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>THE OVERNIGHT FAILURE</h4>
<h5>Sebastian Sogamoso</h5>
</section>
<section>
<img src="img/speakers/speaker-sebastian-sogamoso2.jpg" alt="" style="border: 0; box-shadow: none; width: 80%;" />
</section>
<section>
<img src="img/speakers/speaker-sebastian-sogamoso3.jpg" alt="" style="border: 0; box-shadow: none; width: 50%;" />
</section>
<section>
<h2>Responsible Rails - Become the responsible Rails developer</h2>
<ul>
<li>http://blog.arkency.com/responsible-rails/</li>
<li>for free with MAKE_RUBY_GREAT_AGAIN code</li>
<li>don't know if it's good, but it's for free ;)</li>
</ul>
</section>
<section>
<img src="img/speakers/speaker-hubert-lepicki.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>FAULT TOLERANCE IN RUBY</h4>
<h5>Hubert Łępicki</h5>
</section>
<section>
<h2>Semian</h2>
<h3>https://github.com/Shopify/semian</h3>
<ul>
<li>circuit breaker</li>
<li>ready to use adapters (mysql, redis, net/http)</li>
<li>fail fast philosophy</li>
<li>works with Ruby / OS processes (but NOT threads)</li>
<li>uses Unix IPC to synchronize</li>
<li>modifies behaviors of third party libs<br>
</li>
</ul>
</section>
<section>
<h2>Celluloid</h2>
<h3>https://github.com/celluloid/celluloid</h3>
<ul>
<li>turns objects into actors</li>
<li>allows linking actors</li>
<li>allows supervision/restarts</li>
</ul>
</section>
<section>
<h2>Ruby 3.0.0 - Guilds</h2>
<p>http://www.atdot.net/~ko1/activities/2016_rubykaigi.pdf</p>
</section>
<section>
<p>http://slides.com/hubertlepicki/fault-tolerance-in-ruby</p>
</section>
<section>
<img src="img/speakers/speaker-valentin-fondaratov.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>AUTOMATED TYPE CONTRACTS GENERATION FOR RUBY</h4>
<h5>Valentin Fondaratov</h5>
</section>
<section>
<h2>I'm sorry I don't remember what it was about</h2>
</section>
<section>
<h2>Fortunately there are slides</h2>
</section>
<section>
<p>https://speakerdeck.com/valich/automated-type-contracts-generation-for-ruby</p>
</section>
<section>
<img src="img/ruby-vs-elixir-panel.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>RUBY vs ELIXIR</h4>
</section>
<section>
<img src="img/speakers/speaker-piotr-szmielew.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>BINDINGS IN RUBY - BEHIND THE MAGIC OF BLOCKS</h4>
<h5>Piotr Szmielew</h5>
</section>
<section>
<p>https://speakerdeck.com/esse/bindings-in-ruby-behind-the-magic-of-blocks</p>
</section>
<section>
<ul>
<li>RubyVM</li>
<li>TracePoint</li>
</ul>
</section>
<section>
<img src="img/speakers/speaker-piotr-szmielew2.jpg" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<img src="img/speakers/speaker-piotr-szmielew3.jpg" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<p>http://charytatywni.allegro.pl/en/listing?sellerId=9300675</p>
</section>
<section>
<img src="img/learn-new-languages.jpg" alt="" style="border: 0; box-shadow: none; width: 80%;" />
</section>
<section>
<img src="img/speakers/speaker-norbert-wojtowicz.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>THE BABEL FISH IS DATA: A CASE STUDY</h4>
<h5>Norbert Wójtowicz</h5>
</section>
<section>
<h2>It was good so hopefully the video will be up shortly</h2>
</section>
<section>
<h2>Clojure and ClojureScript</h2>
</section>
<section>
<h2>You should take a look</h2>
</section>
<section>
<h2>#clojure and #clojurescript stealing best ideas from other langs</h2>
</section>
<section>
<img src="img/speakers/speaker-norbert-wojtowicz2.jpg" alt="" style="border: 0; box-shadow: none; width: 50%;" />
</section>
<section>
<img src="img/speakers/speaker-maciej-rzasa.png" alt="" style="border: 0; box-shadow: none;" />
<h4>WE ALL BUILD DISTRIBUTED SYSTEMS</h4>
<h5>Maciej Rząsa</h5>
</section>
<section>
<p>https://speakerdeck.com/mrzasa/we-all-make-distributed-systems-wroc-love-dot-rb-2017</p>
</section>
<section>
<img src="img/speakers/speaker-wojciech-rzasa.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>PREDICTING PERFORMANCE CHANGES OF DISTRIBUTED APPLICATIONS</h4>
<h5>Wojciech Rząsa</h5>
</section>
<section>
<img src="img/speakers/speaker-wojciech-rzasa2.gif" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<p>https://speakerdeck.com/wrzasa/predicting-performance-changes-of-distributed-applications</p>
</section>
<section>
<h4>PANEL - HOW TO SURVIVE IN THE JAVASCRIPT WORLD AS A RUBY PROGRAMMER AND STAY SANE</h4>
</section>
<section>
<img src="img/panel-js-ruby.jpg" alt="" style="border: 0; box-shadow: none; width: 50%;" />
</section>
<section>
<img src="img/kill-me-now.jpg" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<img src="img/speakers/speaker-petr-chalupa.jpg" alt="" style="border: 0; box-shadow: none;" />
<h4>CONCURRENTRUBY V1.1.0: NEW FRAMEWORK, NEW WAY OF WRITING CONCURRENT CODE!</h4>
<h5>Petr Chalupa</h5>
</section>
<section>
<p>http://ruby-concurrency.github.io/concurrent-ruby/Concurrent/Promises.html</p>
</section>
<section>
<img src="img/gsoc.jpg" alt="" style="border: 0; box-shadow: none;" />
</section>
<section>
<p>Applications close April 3, 2017 at 18:00 (CEST)</p>
</section>
<section>
<h1>THE END - Q & A</h1>
<ul style="text-align: center; list-style: none;">
<li>github: <a href="https://github.com/nijikon">@nijikon</a></li>
<li>twitter: <a href="http://twitter.com/tomaszpajor">@tomaszpajor</a></li>
<li>e-mail: <a href="mailto:[email protected]">[email protected]</a></li>
<li><a href="https://coditsu.io">coditsu.io</a></li>
</ul>
</section>
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