Why (Still) Ruby?

Slides for my final keynote "Why (Still) Ruby" at RubyConf Brasil 2016 (the final RubyConf Brasil 😢) http://www.rubyconf.com.br/en/schedule#7eb62dc8b9508ea70bfd1be5f71773d4 #rubyconfbr

1. Why (Still) Ruby? Akira Matsuda #rubyconfbr
2. Me ⚽ Akira Matsuda
3. OMG! I'm Doing the
 Closing Keynote! ⚽ It's a great honor!
4. How Was RubyConf Brasil?
5. How Was RubyConf Brasil?
6. How Were the Talks?
7. We Had Some Great Talks About Web Frameworks ⚽ Rails ⚽ etc.
8. We Had Some Amazing Talks About Elixir / Crystal
9. We Had Some Amazing Talks About Elixir / Crystal
10. But,
11. This Event is_a RubyConf ⚽ According to its name
12. Why Didn't You All Talk About Ruby?
13. Why Didn't You All Talk About Ruby?
14. Because Ruby is Matured?
 So There's No New Topic Anymore?
15. Because People Are Losing Their Interest in Ruby?
 And Shifting to Newer Languages?
16. I Don't Think So ⚽ Ruby has many new topics that you should know ⚽ People are still interested in these stories
17. Let Me Show You an Example of a Conference That
18. People Are Still Enthusiastically Talking About Ruby
19. RubyKaigi ⚽ http://rubykaigi.org/
20. RubyKaigi
21. 2.weeks.ago
22. The Organizing Team ⚽ http://rubykaigi.org/team
23. The Organizing Team
24. The Organizing Team Me
25. Me ⚽ Akira Matsuda ⚽ "Chief Organizer" of RubyKaigi
26. RubyKaigi ⚽ A purely technical international conference ⚽ Deeply focused on Ruby language ⚽ Held in Japan annualy
27. RubyKaigi.is_a International Conference
28. RubyKaigi.attendees
 .map(&:from)
29. Brasil?
30. Brasil? ⚽ I came all the way from Japan for this conference! ⚽ It's your turn to come visit our conference in Japan ⚽ Why don't you?
31. RubyKaigi
32. RubyKaigi.has_many Ruby.committers ⚽ Because most of Ruby core developers live in Japan ⚽ We had about 30 Ruby committers at this year's event
33. "Ruby Committers vs The World" ⚽ And, we put them all together on stage!
34. "Ruby Committers vs The World"
35. "Ruby Committers vs The World" ⚽ 1 hour live discussion and Q&A ⚽ Only possible in RubyKaigi because no other conference in the world has this many Ruby committers
36. "Ruby Committers vs The World" Me
37. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer
38. Ruby
39. Ruby Is Pretty Mature ⚽ 23 years old. Not a kid anymore ⚽ Conquered the web world
40. Is Ruby Language Mature Enough? ⚽ Is Ruby "Done" already?
41. No!
42. There're So Much Room for
 Feature & Performance Improvements
43. At RubyKaigi, We Made Some Announcements ⚽ Ruby 2.4 New Features ⚽ Ruby 3.0 Plans
44. Ruby 2.4 New Features
45. Integer Unification (akr) ⚽ http://rubykaigi.org/2016/ presentations/tanaka_akr.html
46. Ruby <= 2.3 1.class #=> Fixnum (2**100).class #=> Bignum
47. Ruby 2.4 1.class #=> Integer (2**100).class #=> Integer
48. Slides Are Linked from the Official Site ⚽ http://rubykaigi.org/2016/schedule/ ⚽ Please check them out if you want to know more details
49. Improvements on Unicode Case Conversion (duerst) ⚽ http://rubykaigi.org/2016/ presentations/duerst.html
50. Ruby <= 2.3 'São Paulo'.upcase #=> "SãO PAULO"
51. Ruby 2.4 'São Paulo'.upcase #=> "SÃO PAULO"
52. Slides and Video Are Linked from the Official Site ⚽ http://rubykaigi.org/2016/schedule/ ⚽ Please check them out if you want to know more details
53. Plans for Ruby 3
54. New Type System (matz) ⚽ http://rubykaigi.org/2016/ presentations/yukihiro_matz.html
55. Matz's Original "Typing System"
 (͖Ύ͏Γվ) http://www.itmedia.co.jp/enterprise/articles/0704/24/news006_2.html
56. "Soft Typing"
57. "You will see the future of the type system in Ruby3." ⚽ http://rubykaigi.org/2016/ presentations/yukihiro_matz.html
58. New Concurrency System (ko1) ⚽ http://rubykaigi.org/2016/ presentations/ko1.html
59. ko1 ⚽ The author of current Ruby VM ⚽ Full-time Ruby committer at Heroku Inc.
60. "Guild" ⚽ Wraps Ruby Thread manipulation ⚽ Influenced by recent languages, libraries with strong concurrency system ⚽ His answer to them
61. Slides and Video Are Linked from the Official Site ⚽ http://rubykaigi.org/2016/schedule/ ⚽ Please check them out if you want to know more details
62. Ruby 3x3
63. Ruby 3x3 ⚽ Ruby 3 will be 3 times faster than Ruby 2
64. Deoptimization Engine (shyouhei) ⚽ http://rubykaigi.org/2016/ presentations/shyouhei.html
65. The est Talk Proposal
 I've Ever Seen
66. Deoptimization ⚽ The patch is already online ⚽ https://github.com/ruby/ruby/pull/1419
67. shyouhei ⚽ Full-time Ruby committer at MoneyForward Inc.
68. Companies That've Been Supporting Ruby Development ⚽ NaCl (supporting Matz: since 1997) ⚽ Heroku (Matz, ko1, nobu: since 2011-2012) ⚽ MoneyForward (shyouhei: since 2015)
69. The Deoptimization Patch ⚽ This patch is his first output from MoneyForward ⚽ Will hopefully be merged to 2.4 (?)
70. Slides Are Linked from the Official Site ⚽ http://rubykaigi.org/2016/schedule/ ⚽ Please check them out if you want to know more details
71. Dive into CRuby (naruse) ⚽ Closing keynote of RubyKaigi 2016
72. naruse ⚽ Release manager of Ruby 2.4
73. Did You Know that Matz is No Longer a Release Manager? ⚽ <= 1.8.5 matz ⚽ 1.8.5, 1.8.6, 1.8.7 shyouhei ⚽ 1.9 yugui ⚽ 1.9.3 yugui, mame ⚽ 2.0 mame ⚽ 2.1, 2.2, 2.3, 2.4 naruse
74. naruse as a Release Manager ⚽ 2.1, 2.2, 2.3, 2.4 ⚽ Released, and going to release all these Rubies since we decided to release Ruby once per year
75. Dive into CRuby (naruse) ⚽ He showed us how he hacks the C code in ruby core ⚽ He showed us there're so much rooms for improvement
76. Also, He Stated That ⚽ We can improve not only the language core such as VM, but also stdlibs
77. Ingredients of the Ruby Repo ⚽ The language core ⚽ stdlibs as C extensions ⚽ stdlibs in Ruby
78. Maintaining Stdlibs is Hard
79. Stdlibs Tend to Easily Become Unmaintained ⚽ OpenSSL: No maintainer until rhe joined ruby-core this year ⚽ WEBRick: Nobody actively maintains
80. Stdlibs Maintainers ⚽ https://bugs.ruby-lang.org/projects/ ruby/wiki/MaintainersStdlib ⚽ You'll see so many "unmaintained" libraries ⚽ And this list is also "unmaintained" indeed
81. Number of Stdlibs ⚽ Very roughly counted by
 
 % cat <(ls lib) <(ls ext) | sed 's/\.rb$//' | sort -u | wc -l
82. Number of Stdlibs ⚽ 1.6: 79 ⚽ 1.8: 121 ⤴⤴⤴ ⚽ 1.9: 113 ⤵ ⚽ 2.0: 111 ⤵ ⚽ 2.1: 111 ⚽ 2.2: 107 ⤵ ⚽ 2.3: 105 ⤵ ⚽ 2.4: 102 ⤵
83. Number of Stdlibs ⚽ Gradually decreasing in recent versions
84. Gemifying Stdlibs ⚽ Recent trend is to "gemify" stdlibs ⚽ And extract each individual repo under https://github.com/ruby/
85. What Were Gemified in 2.4 ⚽ Tk ⚽ XMLRPC
86. Ruby/Tk ⚽ The oldest GUI library in Ruby (since the last century!) ⚽ Cross Platform ⚽ Initially created by Matz ⚽ Being maintained by nagai
87. Who Uses Tk Now?
88. Gemified ⚽ https://github.com/ruby/tk
89. Pros ⚽ Tarball size ⤵ ⚽ Build time ⤵ ⚽ No need to add a build option `RUBY_CONFIGURE_OPTS="--with-out-ext=tk,tk/*"` anymore ⚽ Easier to patch, contribute, and release
90. Cons ⚽ Those who uses Tk has to
 `gem install tk`
 before using
91. We're Extracting Stdlibs to Gems ⚽ So everyone can easily contribute ⚽ IMO this is the main purpose
92. Future Plans ⚽ WEBRick? ⚽ OpenSSL? ⚽ Anything in the stdlibs list
93. ruby/* gems Are Looking for Maintainers / Contributors ⚽ Patches are welcome!
94. And Ruby Stdlibs Are Also Looking for Maintainers ⚽ Send us your patches!
95. Let's Go Back to RubyKaigi
96. These Talks Were About Developing Ruby
97. For What Do We Use Ruby?
98. An Unix Shell Written in Ruby (keiju, 2015) ⚽ http://rubykaigi.org/2015/ presentations/keiju
99. keiju ⚽ God father of the language "Ruby" ⚽ Author of IRB
100. Infra as a Code ⚽ Chef / Puppet / Itamae ⚽ Serverspec ⚽ Hashicorp products ⚽ winebarrel wares
101. Infra as a Code ⚽ Ruby DSL
102. Container
103. Haconiwa (@udzura) ⚽ http://rubykaigi.org/2016/ presentations/udzura.html ⚽ mruby x container
104. Systems Programming
105. Hijacking syscalls with (m)ruby (@franckverrot) ⚽ http://rubykaigi.org/2016/ presentations/franckverrot.html ⚽ An experiment on overriding Unix syscalls using mruby
106. Building maintainable command- line tools with mruby (drbrain) ⚽ http://rubykaigi.org/2016/ presentations/drbrain.html ⚽ mruby & mruby-cli
107. mruby ⚽ People talk about this a lot at RubyKaigi
108. What is mruby? ⚽ Matz's new toy ⚽ Yet another Ruby implementation ⚽ Lightweight ⚽ m is for "Embedded" ⚽ https://github.com/mruby/mruby
109. Embedded Devices x mruby
110. making robot with mruby (@yuri_at_earth, 2015) ⚽ http://rubykaigi.org/2015/presentations/ yurie ⚽ RTOS + LEGO Mindstorms EV3 + Raspberry Pi + mruby ⚽ With a demo
111. High Tech Seat in mruby (@yuri_at_earth) ⚽ http://rubykaigi.org/2016/presentations/ yuri_at_earth.html ⚽ Controlling "High Tech Seat" (toilet) with mruby ⚽ With a demo!
112. Charming Robots (@juliancheal, 2015) ⚽ http://rubykaigi.org/2015/presentations/ juliancheal ⚽ How to control physical devices with Ruby (not mruby) ⚽ With tons of demos
113. It's More Fun to Compute (@juliancheal) ⚽ http://rubykaigi.org/2016/ presentations/juliancheal.html ⚽ How to make music with Ruby ⚽ With tons of demos
114. Games
115. Game Development + Ruby = Happiness? (@amirrajan) ⚽ http://rubykaigi.org/2016/ presentations/amirrajan.html ⚽ iOS Game: A Dark Room ⚽ Game programming with Ruby
116. Writing A Gameboy Emulator in Ruby (0xColby) ⚽ http://rubykaigi.org/2016/presentations/ 0xColby.html ⚽ Nintendo Gameboy emulator in Ruby ⚽ Was nice that we had this for RubyKaigi 2016 ⚽ Because Nintendo was a RubyKaigi sponsor!
117. Nintendo Sponsors RubyKaigi!
118. NES Emulator Written in Ruby ⚽ Optcarrot ⚽ Created by mame ⚽ https://github.com/mame/optcarrot ⚽ He created this for benchmarking ruby implementations
119. We Didn't Have a Talk About This at RubyKaigi ⚽ But he made a talk about this at
 a "regional RubyKaigi" called
 Kawasaki RubyKaigi 01
120. Benchmark
121. The Benchmark Shows That ⚽ Optcarrot runs at 20 fps in Ruby 2.0 ⚽ The original NES requires 60 fps ⚽ If Ruby became 3x faster, then we can comfortably play NES games with ruby!
122. Purpose of This Project ⚽ To check if we could achieve "Ruby 3x3"
123. mame ⚽ Ruby committer ⚽ Ruby 2.0 release manager ⚽ Very well known by his another mind- blowing masterpiece
124. Quine Relay
125. 100 Programming Languages Quine ⚽ https://github.com/mame/quine-relay ⚽ A Ruby code that prints a Scala code that prints a Scheme code that prints a ............. Ruby code that prints a Scala code that .............
126. mame at RubyKaigi 2015
127. TRICK ⚽ "Transcendental Ruby Imbroglio Contest for rubyKaigi" ⚽ Weirdest Ruby code contest ⚽ So crazy weird that I cannot explain. Please take a look at the repo ⚽ https://github.com/tric/trick2015
128. You See, We're Having Fun with Ruby!
129. Playing with Ruby is Fun! ⚽ Ruby gives us joy of programming ⚽ We're sharing such fun at the events
130. Actually,
131. Ruby Can Also Be Used for Serious Projects
132. Science x Ruby
133. Pwrake: Distributed Workflow Engine based on Rake (@masa16tanaka) ⚽ http://rubykaigi.org/2016/ presentations/masa16tanaka.html ⚽ A distributed workflow engine designed and used for scientific data processing on cluster
134. @masa16tanaka ⚽ The autor of NArray since 1999
135. Data Analysis in RUby with daru (@v0dro) ⚽ http://rubykaigi.org/2016/presentations/v0dro.html ⚽ A "library for analysis, cleaning, manipulation and visualization of data" ⚽ So many features for scientific computing ⚽ https://github.com/v0dro/daru
136. SciRuby Machine Learning Current Status and Future (mrkn) ⚽ Machine learning with Ruby ⚽ Introduced SciRuby project, showed that there're so many works to be done ⚽ And urged the audience to join the project
137. mrkn ⚽ A Ruby committer ⚽ Mainteiner of BigDecimal which was gemified last year (2.3)
138. Another Alternative Ruby Implementation
139. JRuby 9000 Last Year, Today, and Tomorrow (@tom_enebo) ⚽ http://rubykaigi.org/2016/ presentations/tom_enebo.html ⚽ JRuby 9000
140. Yet Another Ruby Implementation ⚽ Opal
141. Isomorphic Web Programming (@youchan) ⚽ http://rubykaigi.org/2016/ presentations/youchan.html
142. Isomorphic Web Programming (@youchan) ⚽ She demonstrated her own React-like framework built on top of Opal ⚽ That can share same Ruby code between Rails and the frontend
143. Web Programming
144. Web Programming with Ruby ⚽ I'm sure majority of you here use Ruby for this ⚽ Rails programmer?
145. Rails ⚽ Rails is still great ⚽ And so Rails is great in Ruby conferences
146. In Fact, We Had Many Good Talks About Rails at RubyConf Brasil 2016
147. Rails in RubyKaigi 2016
148. Rails in RubyKaigi 2016 ⚽ (none)
149. OMG! There Were NO Rails Talk at RubyKaigi This Year
150. Why No Rails Talk? ⚽ RubyKaigi may accept Rails talks if they are as technically interesting (for me) as other Ruby talks ⚽ But we just didn't get none of such proposal
151. My Recent Concern on Rails ⚽ Framework performance
152. My Presentation at RailsConf This Year ⚽ "3x Rails"
153. 3x Rails ⚽ https://speakerdeck.com/a_matsuda/3x- rails ⚽ At RailsConf 2016
154. BTW at RailsConf This Year,
 I Got the RubyHero Award!
155. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer ⚽ A Ruby hero
156. Anyway,
157. At That Presentation, I Revealed Some Ideas to Make Rails Faster ⚽ Some of them are already implemented or PRed
158. For Example ⚽ Unicode on Rails ⚽ ActiveSupport::TimeWithZone speed up ⚽ AV Template Resolver
159. Unicode on Rails ⚽ As I introduced earlier in this talk, Ruby's built-in Unicode treatment is being improved by Martin-sensei ⚽ Rails also has its own Unicode module ⚽ Can't we unify them?
160. PRs ⚽ https://github.com/rails/rails/pull/ 26402 ⚽ https://github.com/rails/rails/pull/ 26403 (withdrawn)
161. My Future Plans on Rails ⚽ I'll work on these perf things after this conference
162. I Said, "I'll Work", But...
163. Rails Is Not Actually My "Work" ⚽ I'm not paid
164. I'm In Fact Just a Hobby Rails Committer
165. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer ⚽ A Ruby hero ⚽ A Rails committer
166. Another Hobby of Mine ⚽ Creating Rails plugins
167. I Authored ⚽ kaminari ⚽ active_decorator ⚽ action_args
168. I Authored ⚽ stateful_enum ⚽ motorhead ⚽ database_rewinder ⚽ jb ⚽ erd ⚽ i18n_generators ⚽ html5_validators ⚽ hocus_pocus ⚽ traceroute ⚽ ...
169. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer ⚽ A Ruby hero ⚽ A Rails committer ⚽ A Rails plugin author
170. Kaminari ⚡
171. I'm Sorry I'm Terribly Bad at Maintaining Gems ⚽ But I guess we're pretty close to 1.0!
172. Plans for Kaminari 1.0 ⚽ Off topic for today's talk ⚽ Maybe I'll talk about this at another conference
173. Anyway, ⚽ I'm having fun with organizing Ruby events ⚽ I'm having fun with hacking Rails ⚽ I make money with consulting Ruby/Rails ⚽ And I'm happy with that :)
174. I'm Just a Rails Programmer Now ⚽ But it's so exciting to see how people use Ruby for other things
175. Ruby Is Still Improving ⚽ Ruby is still expanding its limit
176. Sure, Ruby Is Not the Only Tool to Do it ⚽ There're alternatives ⚽ As we're seeing in this conference
177. Elixir Is Actually Becoming Popular in Japan
178. ElixirKaigi ⚽ Back in 2013 ⚽ We invited José to RubyKaigi 2013 ⚽ Then Asakusa.rb hosted an Elixir event named "ElixirKaigi"
179. Asakusa.rb
180. Asakusa.rb ⚽ A Rubyists meetup in Tokyo ⚽ Since 2008 ⚽ Meet up every Tuesday (just had 375th meetup this week) ⚽ Don't forget to visit us when you're coming to Japan! ⚽ Founded by
181. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer ⚽ A Ruby hero ⚽ A Rails committer ⚽ A Rails plugin author ⚽ Founder of Asakusa.rb
182. The Elixir Book ⚽ ko1 (the Ruby VM author) and his wife just translated Dave's Elixir book into Japanese
183. The Elixir Book ko1
184. Anyway,
185. Elixir Is Great ⚽ But I don't think Elixir could/should defeat Ruby
186. I'm Not Telling You to Stop Learning New Things ⚽ Of course we should never stop learning new things ⚽ Even the Ruby VM author is learning a lot from Elixir
187. But, Please Keep in Mind That ⚽ We're not enemies ⚽ You don't have to quit Ruby to learn Elixir
188. We're Friends! ⚽ Some people are working on Elixir to make the world better ⚽ Some other people are working on Ruby to make the world better ⚽ This is a lovely situation!
189. It's Really Happy to See Those Ruby Children Are Growing ⚽ Ruby can learn from them ⚽ Thank you for inspiring Ruby!
190. However,
191. We Still Believe That
 Ruby Can Do it Better
192. Why Not Ruby? ⚽ Why don't you just keep using Ruby? ⚽ Can you think of any reason that you don't choose Ruby?
193. Speed? ⚽ Because Ruby is considered slow?
194. Speed ⚽ Ruby 3x3
195. Speed ⚽ No problem! Ruby is soon getting 3x faster!
196. Concurrency? ⚽ Because Ruby doesn't have rich support for concurrent programming?
197. Concurrency ⚽ "Guild"
198. Concurrency ⚽ This should be nicely resolved in Ruby 3!
199. Types? ⚽ Because Ruby cannot deal with types?
200. Types ⚽ Matz's "soft typing"
201. Types ⚽ Matz has some plan on improving the Ruby type system!
202. Library / Ecosystem? ⚽ Because Ruby has no good libraries outside of the Rails ecosystem?
203. Library / Ecosystem ⚽ People are eagerly working on them! ⚽ Let's do this together!
204. Why Not Ruby? ⚽ There's really no reason "why not Ruby"!
205. Today's Topic ⚽ Why Ruby?
206. Why Ruby?
207. Because ⚽ I see that much people are having fun with Ruby!
208. People Are Having Fun
 with Ruby! ⚽ Maybe because Ruby is essentially fun!
209. Ruby's Design Principle ⚽ "Ruby is designed to make programmers happy" - Matz
210. Ruby Made My Life as a Programmer Happy ⚽ No other programming language did such a thing to me
211. Ruby Made Me Friends
212. And Ruby Brought Me to Brasil ⚽ Thank you Fabio for inviting me!
213. Ruby Changed My Life
 This Way
214. So,
215. I Believe in Ruby's Power ⚽ Power to change people ⚽ Power to make the world a better place
216. Why (Still) Ruby?
217. Why (Still) Ruby? ⚽ Ruby is still evolving ⚽ Ruby has Rails ⚽ The Ruby community ⚽ Fun of programming
218. Ruby Is Still Evolving ⚽ Getting faster ⚽ New features
219. Ruby Has Rails ⚽ And no other language has Rails ⚽ Expanding Rubyism to the web world ⚽ A great tool to change your code to
220. The Ruby Community ⚽ We are nice! (MINASWAN) ⚽ Ruby brought social coding to us ⚽ #rubyfriends ⚽ Amazing offline events (like RubyKaigi, RubyConf Brasil) ⚽ Strong ecosystem
221. Fun of Programming ⚽ Playing with Ruby is fun ⚽ Ruby usage is expanding ⚽ So,
222. Fun of Programming ⚽ Playing with Ruby is fun ⚽ Ruby usage is expanding ⚽ Fun of Programming is expanding!
223. Keep Having Fun with Ruby! ⚽ Enjoy yourself being a Rubyist!
224. Why (Still) Ruby? ⚽ Ruby is still evolving ⤴ ⚽ Ruby has Rails ⚽ The Ruby community ⚽ Fun of programming /
225. Me ⚽ Akira Matsuda ⚽ Chief organizer of RubyKaigi ⚽ A Ruby committer ⚽ A Ruby hero ⚽ A Rails committer ⚽ A Rails plugin author ⚽ Founder of Asakusa.rb ⚽ https://github.com/amatsuda ⚽ https://twitter.com/a_matsuda