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CRuby Committers 
Who’s Who in 2014
CRuby Committers 
84 
accounts 
(including a bot)
Active Committer 
(committed since 2013/06/01) 
50 
(including a bot)
Committers as 
Speakers 
15 
(including 3 keynote speakers)
SEP 18 
First Day (Today)
nagachika 
Tomoyuki Chikanaga (@nagachika) 
Groovenauts, Inc. 
CRuby Committer/ 2.1 branch maintainer 
ruby-trunk-changes ...
nagachika 
Tomoyuki Chikanaga (@nagachika) 
Groovenauts, Inc. 
CRuby Committer/ 2.1 branch maintainer 
ruby-trunk-changes ...
ko1 
Koichi Sasada 
Heroku, Inc. 
Ruby’s VM 
Speed Freak 
RGenGC 
Incremental GC ← NEW!!
ko1 
Photo by @hsbt 
newlyweds ← NEW!!
nari 
Narihiro Nakamura 
Mr. GC 
Lazy Sweep/Bitmap Marking 
Symbol GC ← NEW!!
SEP 19 
2nd Day
matz 
Yukihiro "Matz" Matsumoto 
The Creator of Ruby 
Language Designer 
mruby
matz 
Title Collector 
Charman - Ruby Association 
Fellow - NaCl 
Chief architect, Ruby - Heroku 
Research institute fello...
matz 
r44436 
version.h 
bump up version to 2.2.0 ← NEW!! 
-#define RUBY_VERSION "2.1.0" +#define RUBY_VERSION "2.2.0"
kazu 
Kazuhiro NISHIYAMA 
Mr. ‘fix typo’ 
97 / 143 ≒ 68% ‘fix typo’ ratio
kazu 
proofreading ‘ruby-trunk-changes’
hsbt 
Hiroshi SHIBATA 
GMO Pepabo, Inc. 
Administrator of *.ruby-lang.org (www, bugs, ML) 
Test edge ruby (trunk) on rails
sorah 
Shota Fukumori 
Cookpad Inc. 
test/unit maintainer →(dropped from stdlib) 
parallel test
kouji 
Kouji Takao 
Readline extension maintainer 
MacRuby committer 
Ruby Programming Shounendan ← NEW!! 
http://smalruby...
ktsj 
Kazuki Tsujimoto 
Nomura Research Institute, Ltd. 
VM Bug Hunter 
Pattern Matching (pattern-match) 
Power Assert(tes...
SEP 20 
3rd Day
tenderlove 
Aaron Patterson 
AT&T → RedHat, Inc. ← NEW!! 
psych/dl/fiddle maintainer 
Rails Committer 
Takoyaki Kamen?
keiju 
Keiju Ishitsuka 
Ruby’s godfather 
irb author & maintainer
seki 
Masatoshi SEKI 
dRuby/rinda/erb auther & maintainer
zzak 
zzak 
Documentation maintainer 
rubygems, rake, rdoc contributor 
Conference freak ← NEW!? 
England, Singapore, Mexi...
kou 
Kouhei Sutou 
ClearCode Inc. 
rexml/rss/xmlrpc maintainer 
Groonga ← NEW!!
tmm1 
Aman Gupta 
GitHub, Inc. 
Memory Optimizations 
Inspection/Profiler/Debugger 
Hash#[] Optimization ← NEW!! 
ObjectSp...
NEXT 
ko1’s Keynote 
“Build-up Ruby interepreter - What 
is easy and what is diffi゙cult?” 
TO BE CONTINUED...
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"CRuby Committers Who's Who in 2014" in RubyKaigi 2014.
http://rubykaigi.org/2014/presentation/S-TomoyukiChikanaga

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CRuby_Committers_Whos_Who_in_2014

  1. 1. CRuby Committers Who’s Who in 2014
  2. 2. CRuby Committers 84 accounts (including a bot)
  3. 3. Active Committer (committed since 2013/06/01) 50 (including a bot)
  4. 4. Committers as Speakers 15 (including 3 keynote speakers)
  5. 5. SEP 18 First Day (Today)
  6. 6. nagachika Tomoyuki Chikanaga (@nagachika) Groovenauts, Inc. CRuby Committer/ 2.1 branch maintainer ruby-trunk-changes RubyPrize 2013 ← NEW!!
  7. 7. nagachika Tomoyuki Chikanaga (@nagachika) Groovenauts, Inc. CRuby Committer/ 2.1 branch maintainer ruby-trunk-changes RubyPrize 2013 ← NEW!! Speaker Icon svn account bio Update from “Who’s Who in 2013”
  8. 8. ko1 Koichi Sasada Heroku, Inc. Ruby’s VM Speed Freak RGenGC Incremental GC ← NEW!!
  9. 9. ko1 Photo by @hsbt newlyweds ← NEW!!
  10. 10. nari Narihiro Nakamura Mr. GC Lazy Sweep/Bitmap Marking Symbol GC ← NEW!!
  11. 11. SEP 19 2nd Day
  12. 12. matz Yukihiro "Matz" Matsumoto The Creator of Ruby Language Designer mruby
  13. 13. matz Title Collector Charman - Ruby Association Fellow - NaCl Chief architect, Ruby - Heroku Research institute fellow - Rakuten Charman - NPO mruby Forum Senior researcher - Kadokawa Ascii Research Lab Visiting Professor - Shimane University Honable member - Matsue City …
  14. 14. matz r44436 version.h bump up version to 2.2.0 ← NEW!! -#define RUBY_VERSION "2.1.0" +#define RUBY_VERSION "2.2.0"
  15. 15. kazu Kazuhiro NISHIYAMA Mr. ‘fix typo’ 97 / 143 ≒ 68% ‘fix typo’ ratio
  16. 16. kazu proofreading ‘ruby-trunk-changes’
  17. 17. hsbt Hiroshi SHIBATA GMO Pepabo, Inc. Administrator of *.ruby-lang.org (www, bugs, ML) Test edge ruby (trunk) on rails
  18. 18. sorah Shota Fukumori Cookpad Inc. test/unit maintainer →(dropped from stdlib) parallel test
  19. 19. kouji Kouji Takao Readline extension maintainer MacRuby committer Ruby Programming Shounendan ← NEW!! http://smalruby.jp/
  20. 20. ktsj Kazuki Tsujimoto Nomura Research Institute, Ltd. VM Bug Hunter Pattern Matching (pattern-match) Power Assert(test-unit-power_assert) ← NEW!!
  21. 21. SEP 20 3rd Day
  22. 22. tenderlove Aaron Patterson AT&T → RedHat, Inc. ← NEW!! psych/dl/fiddle maintainer Rails Committer Takoyaki Kamen?
  23. 23. keiju Keiju Ishitsuka Ruby’s godfather irb author & maintainer
  24. 24. seki Masatoshi SEKI dRuby/rinda/erb auther & maintainer
  25. 25. zzak zzak Documentation maintainer rubygems, rake, rdoc contributor Conference freak ← NEW!? England, Singapore, Mexico, Scotland, Taiwan, Japan, Philippines, India, Australia, South Africa, Belgium
  26. 26. kou Kouhei Sutou ClearCode Inc. rexml/rss/xmlrpc maintainer Groonga ← NEW!!
  27. 27. tmm1 Aman Gupta GitHub, Inc. Memory Optimizations Inspection/Profiler/Debugger Hash#[] Optimization ← NEW!! ObjectSpace.dump_all ← NEW!!
  28. 28. NEXT ko1’s Keynote “Build-up Ruby interepreter - What is easy and what is diffi゙cult?” TO BE CONTINUED...

"CRuby Committers Who's Who in 2014" in RubyKaigi 2014. http://rubykaigi.org/2014/presentation/S-TomoyukiChikanaga

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