OMG! I'm Doing the
Closing Keynote!
⚽ It's a great honor!
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How Was RubyConf Brasil?
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How Was RubyConf Brasil?
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How Were the Talks?
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We Had Some Great Talks
About Web Frameworks
⚽ Rails
⚽ etc.
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We Had Some Amazing Talks
About Elixir / Crystal
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We Had Some Amazing Talks
About Elixir / Crystal
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But,
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This Event is_a RubyConf
⚽ According to its name
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Why Didn't You All Talk About
Ruby?
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Why Didn't You All Talk About
Ruby?
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Because Ruby is Matured?
So There's No New Topic Anymore?
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Because People Are Losing Their Interest in
Ruby?
And Shifting to Newer Languages?
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I Don't Think So
⚽ Ruby has many new topics that you
should know
⚽ People are still interested in these stories
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Let Me Show You an Example
of a Conference That
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People Are Still Enthusiastically
Talking About Ruby
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RubyKaigi
⚽ http://rubykaigi.org/
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RubyKaigi
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2.weeks.ago
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The Organizing Team
⚽ http://rubykaigi.org/team
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The Organizing Team
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The Organizing Team
Me
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Me
⚽ Akira Matsuda
⚽ "Chief Organizer" of RubyKaigi
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RubyKaigi
⚽ A purely technical international
conference
⚽ Deeply focused on Ruby language
⚽ Held in Japan annualy
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RubyKaigi.is_a International
Conference
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RubyKaigi.attendees
.map(&:from)
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Brasil?
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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?
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RubyKaigi
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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
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"Ruby Committers vs The
World"
⚽ And, we put them all together on stage!
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"Ruby Committers vs The
World"
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"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
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"Ruby Committers vs The
World"
Me
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Me
⚽ Akira Matsuda
⚽ Chief organizer of RubyKaigi
⚽ A Ruby committer
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Ruby
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Ruby Is Pretty Mature
⚽ 23 years old. Not a kid anymore
⚽ Conquered the web world
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Is Ruby Language Mature
Enough?
⚽ Is Ruby "Done" already?
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No!
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There're So Much Room for
Feature & Performance Improvements
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At RubyKaigi, We Made
Some Announcements
⚽ Ruby 2.4 New Features
⚽ Ruby 3.0 Plans
Deoptimization
⚽ The patch is already online
⚽ https://github.com/ruby/ruby/pull/1419
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shyouhei
⚽ Full-time Ruby committer at
MoneyForward Inc.
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Companies That've Been
Supporting Ruby Development
⚽ NaCl (supporting Matz: since 1997)
⚽ Heroku (Matz, ko1, nobu: since
2011-2012)
⚽ MoneyForward (shyouhei: since 2015)
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The Deoptimization Patch
⚽ This patch is his first output from
MoneyForward
⚽ Will hopefully be merged to 2.4 (?)
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Slides Are Linked from the
Official Site
⚽ http://rubykaigi.org/2016/schedule/
⚽ Please check them out if you want to
know more details
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Dive into CRuby (naruse)
⚽ Closing keynote of RubyKaigi 2016
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naruse
⚽ Release manager of Ruby 2.4
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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
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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
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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
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Also, He Stated That
⚽ We can improve not only the language
core such as VM, but also stdlibs
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Ingredients of the Ruby Repo
⚽ The language core
⚽ stdlibs as C extensions
⚽ stdlibs in Ruby
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Maintaining Stdlibs is Hard
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Stdlibs Tend to Easily
Become Unmaintained
⚽ OpenSSL: No maintainer until rhe joined
ruby-core this year
⚽ WEBRick: Nobody actively maintains
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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
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Number of Stdlibs
⚽ Very roughly counted by
% cat <(ls lib) <(ls ext) | sed 's/\.rb$//' | sort -u | wc -l
Number of Stdlibs
⚽ Gradually decreasing in recent versions
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Gemifying Stdlibs
⚽ Recent trend is to "gemify" stdlibs
⚽ And extract each individual repo under
https://github.com/ruby/
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What Were Gemified in 2.4
⚽ Tk
⚽ XMLRPC
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Ruby/Tk
⚽ The oldest GUI library in Ruby (since the last
century!)
⚽ Cross Platform
⚽ Initially created by Matz
⚽ Being maintained by nagai
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Who Uses Tk Now?
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Gemified
⚽ https://github.com/ruby/tk
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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
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Cons
⚽ Those who uses Tk has to
`gem install tk`
before using
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We're Extracting Stdlibs to
Gems
⚽ So everyone can easily contribute
⚽ IMO this is the main purpose
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Future Plans
⚽ WEBRick?
⚽ OpenSSL?
⚽ Anything in the stdlibs list
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ruby/* gems Are Looking for
Maintainers / Contributors
⚽ Patches are welcome!
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And Ruby Stdlibs Are Also
Looking for Maintainers
⚽ Send us your patches!
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Let's Go Back to RubyKaigi
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These Talks Were About
Developing Ruby
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For What Do We Use Ruby?
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An Unix Shell Written in
Ruby (keiju, 2015)
⚽ http://rubykaigi.org/2015/
presentations/keiju
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keiju
⚽ God father of the language "Ruby"
⚽ Author of IRB
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Infra as a Code
⚽ Chef / Puppet / Itamae
⚽ Serverspec
⚽ Hashicorp products
⚽ winebarrel wares
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Infra as a Code
⚽ Ruby DSL
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Container
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Haconiwa (@udzura)
⚽ http://rubykaigi.org/2016/
presentations/udzura.html
⚽ mruby x container
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Systems Programming
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Hijacking syscalls with
(m)ruby (@franckverrot)
⚽ http://rubykaigi.org/2016/
presentations/franckverrot.html
⚽ An experiment on overriding Unix syscalls
using mruby
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Building maintainable command-
line tools with mruby (drbrain)
⚽ http://rubykaigi.org/2016/
presentations/drbrain.html
⚽ mruby & mruby-cli
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mruby
⚽ People talk about this a lot at RubyKaigi
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What is mruby?
⚽ Matz's new toy
⚽ Yet another Ruby implementation
⚽ Lightweight
⚽ m is for "Embedded"
⚽ https://github.com/mruby/mruby
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Embedded Devices x mruby
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making robot with mruby
(@yuri_at_earth, 2015)
⚽ http://rubykaigi.org/2015/presentations/
yurie
⚽ RTOS + LEGO Mindstorms EV3 + Raspberry
Pi + mruby
⚽ With a demo
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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!
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Charming Robots
(@juliancheal, 2015)
⚽ http://rubykaigi.org/2015/presentations/
juliancheal
⚽ How to control physical devices with Ruby
(not mruby)
⚽ With tons of demos
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It's More Fun to Compute
(@juliancheal)
⚽ http://rubykaigi.org/2016/
presentations/juliancheal.html
⚽ How to make music with Ruby
⚽ With tons of demos
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Games
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Game Development + Ruby =
Happiness? (@amirrajan)
⚽ http://rubykaigi.org/2016/
presentations/amirrajan.html
⚽ iOS Game: A Dark Room
⚽ Game programming with Ruby
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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!
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Nintendo Sponsors
RubyKaigi!
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NES Emulator Written in
Ruby
⚽ Optcarrot
⚽ Created by mame
⚽ https://github.com/mame/optcarrot
⚽ He created this for benchmarking ruby
implementations
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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
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Benchmark
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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!
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Purpose of This Project
⚽ To check if we could achieve "Ruby 3x3"
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mame
⚽ Ruby committer
⚽ Ruby 2.0 release manager
⚽ Very well known by his another mind-
blowing masterpiece
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Quine Relay
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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 .............
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mame at RubyKaigi 2015
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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
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You See, We're Having Fun
with Ruby!
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Playing with Ruby is Fun!
⚽ Ruby gives us joy of programming
⚽ We're sharing such fun at the events
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Actually,
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Ruby Can Also Be Used for
Serious Projects
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Science x Ruby
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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
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@masa16tanaka
⚽ The autor of NArray since 1999
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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
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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
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mrkn
⚽ A Ruby committer
⚽ Mainteiner of BigDecimal which was
gemified last year (2.3)
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Another Alternative Ruby
Implementation
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JRuby 9000 Last Year, Today,
and Tomorrow (@tom_enebo)
⚽ http://rubykaigi.org/2016/
presentations/tom_enebo.html
⚽ JRuby 9000
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Yet Another Ruby
Implementation
⚽ Opal
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Isomorphic Web
Programming (@youchan)
⚽ http://rubykaigi.org/2016/
presentations/youchan.html
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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
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Web Programming
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Web Programming with
Ruby
⚽ I'm sure majority of you here use Ruby for
this
⚽ Rails programmer?
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Rails
⚽ Rails is still great
⚽ And so Rails is great in Ruby conferences
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In Fact, We Had Many Good Talks
About Rails at RubyConf Brasil 2016
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Rails in RubyKaigi 2016
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Rails in RubyKaigi 2016
⚽ (none)
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OMG! There Were NO Rails
Talk at RubyKaigi This Year
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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
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My Recent Concern on Rails
⚽ Framework performance
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My Presentation at RailsConf
This Year
⚽ "3x Rails"
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3x Rails
⚽ https://speakerdeck.com/a_matsuda/3x-
rails
⚽ At RailsConf 2016
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BTW at RailsConf This Year,
I Got the RubyHero Award!
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Me
⚽ Akira Matsuda
⚽ Chief organizer of RubyKaigi
⚽ A Ruby committer
⚽ A Ruby hero
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Anyway,
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At That Presentation, I Revealed
Some Ideas to Make Rails Faster
⚽ Some of them are already implemented or
PRed
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For Example
⚽ Unicode on Rails
⚽ ActiveSupport::TimeWithZone speed up
⚽ AV Template Resolver
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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?
Me
⚽ Akira Matsuda
⚽ Chief organizer of RubyKaigi
⚽ A Ruby committer
⚽ A Ruby hero
⚽ A Rails committer
⚽ A Rails plugin author
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Kaminari ⚡
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I'm Sorry I'm Terribly Bad at
Maintaining Gems
⚽ But I guess we're pretty close to 1.0!
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Plans for Kaminari 1.0
⚽ Off topic for today's talk
⚽ Maybe I'll talk about this at another
conference
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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 :)
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I'm Just a Rails Programmer
Now
⚽ But it's so exciting to see how people use
Ruby for other things
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Ruby Is Still Improving
⚽ Ruby is still expanding its limit
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Sure, Ruby Is Not the Only
Tool to Do it
⚽ There're alternatives
⚽ As we're seeing in this conference
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Elixir Is Actually Becoming
Popular in Japan
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ElixirKaigi
⚽ Back in 2013
⚽ We invited José to RubyKaigi 2013
⚽ Then Asakusa.rb hosted an Elixir event
named "ElixirKaigi"
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Asakusa.rb
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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
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Me
⚽ Akira Matsuda
⚽ Chief organizer of RubyKaigi
⚽ A Ruby committer
⚽ A Ruby hero
⚽ A Rails committer
⚽ A Rails plugin author
⚽ Founder of Asakusa.rb
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The Elixir Book
⚽ ko1 (the Ruby VM author) and his wife
just translated Dave's Elixir book into
Japanese
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The Elixir Book
ko1
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Anyway,
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Elixir Is Great
⚽ But I don't think Elixir could/should
defeat Ruby
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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
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But, Please Keep in Mind
That
⚽ We're not enemies
⚽ You don't have to quit Ruby to learn Elixir
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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!
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It's Really Happy to See Those
Ruby Children Are Growing
⚽ Ruby can learn from them
⚽ Thank you for inspiring Ruby!
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However,
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We Still Believe That
Ruby Can Do it Better
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Why Not Ruby?
⚽ Why don't you just keep using Ruby?
⚽ Can you think of any reason that you don't
choose Ruby?
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Speed?
⚽ Because Ruby is considered slow?
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Speed
⚽ Ruby 3x3
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Speed
⚽ No problem! Ruby is soon getting 3x
faster!
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Concurrency?
⚽ Because Ruby doesn't have rich support
for concurrent programming?
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Concurrency
⚽ "Guild"
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Concurrency
⚽ This should be nicely resolved in Ruby 3!
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Types?
⚽ Because Ruby cannot deal with types?
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Types
⚽ Matz's "soft typing"
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Types
⚽ Matz has some plan on improving the
Ruby type system!
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Library / Ecosystem?
⚽ Because Ruby has no good libraries
outside of the Rails ecosystem?
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Library / Ecosystem
⚽ People are eagerly working on them!
⚽ Let's do this together!
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Why Not Ruby?
⚽ There's really no reason "why not Ruby"!
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Today's Topic
⚽ Why Ruby?
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Why Ruby?
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Because
⚽ I see that much people are having fun
with Ruby!
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People Are Having Fun
with Ruby!
⚽ Maybe because Ruby is essentially fun!
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Ruby's Design Principle
⚽ "Ruby is designed to make programmers
happy" - Matz
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Ruby Made My Life as a
Programmer Happy
⚽ No other programming language did such
a thing to me
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Ruby Made Me Friends
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And Ruby Brought Me to
Brasil
⚽ Thank you Fabio for inviting me!
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Ruby Changed My Life
This Way
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So,
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I Believe in Ruby's Power
⚽ Power to change people
⚽ Power to make the world a better place
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Why (Still) Ruby?
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Why (Still) Ruby?
⚽ Ruby is still evolving
⚽ Ruby has Rails
⚽ The Ruby community
⚽ Fun of programming
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Ruby Is Still Evolving
⚽ Getting faster
⚽ New features
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Ruby Has Rails
⚽ And no other language has Rails
⚽ Expanding Rubyism to the web world
⚽ A great tool to change your code to
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The Ruby Community
⚽ We are nice! (MINASWAN)
⚽ Ruby brought social coding to us
⚽ #rubyfriends
⚽ Amazing offline events (like RubyKaigi, RubyConf Brasil)
⚽ Strong ecosystem
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Fun of Programming
⚽ Playing with Ruby is fun
⚽ Ruby usage is expanding
⚽ So,
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Fun of Programming
⚽ Playing with Ruby is fun
⚽ Ruby usage is expanding
⚽ Fun of Programming is expanding!
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Keep Having Fun with Ruby!
⚽ Enjoy yourself being a Rubyist!
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Why (Still) Ruby?
⚽ Ruby is still evolving ⤴
⚽ Ruby has Rails
⚽ The Ruby community
⚽ Fun of programming /
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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