OSS programmer. RuboCop core team. MCP steering group. Engineering Manager and Distinguished Engineer at ESM, Inc. https://speakerdeck.com/koic 2023-06-26 02:07:39 -0400 松江Ruby会議12 (https://matsue.rubyist.net/matrk12) 松江Ruby会議12 (https://matsue.rubyist.net/matrk12) Sat, 06 Jun 2026 00:00:00 -0400 https://speakerdeck.com/koic/the-notimplementederror-problem-in-ruby https://speakerdeck.com/koic/the-notimplementederror-problem-in-ruby RubyKaigi 2026 (https://rubykaigi.org/2026/presentations/koic.html) RubyKaigi 2026 (https://rubykaigi.org/2026/presentations/koic.html) Tue, 24 Mar 2026 00:00:00 -0400 https://speakerdeck.com/koic/exploring-rubocop-with-mcp 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(https://2025.rubyworld-conf.org/ja/program/day2/) RubyWorld Conference 2025 (https://2025.rubyworld-conf.org/ja/program/day2/) Fri, 12 Sep 2025 00:00:00 -0400 https://speakerdeck.com/koic/ruby-and-llm-ecosystem https://speakerdeck.com/koic/ruby-and-llm-ecosystem ながらRuby会議01 (https://regional.rubykaigi.org/nagara01) ながらRuby会議01 (https://regional.rubykaigi.org/nagara01) Tue, 05 Aug 2025 00:00:00 -0400 https://speakerdeck.com/koic/write-code-every-day https://speakerdeck.com/koic/write-code-every-day Scrum Fest Osaka 2025 https://confengine.com/conferences/scrum-fest-osaka-2025 Scrum Fest Osaka 2025 https://confengine.com/conferences/scrum-fest-osaka-2025 Sat, 19 Jul 2025 00:00:00 -0400 https://speakerdeck.com/koic/bliki-ja-and-the-cathedral-and-the-bazaar https://speakerdeck.com/koic/bliki-ja-and-the-cathedral-and-the-bazaar Tue, 24 Jun 2025 00:00:00 -0400 https://speakerdeck.com/koic/welcome-to-the-llm-club https://speakerdeck.com/koic/welcome-to-the-llm-club https://rubykaigi.org/2025/presentations/koic.html#day2 https://rubykaigi.org/2025/presentations/koic.html#day2 Thu, 17 Apr 2025 00:00:00 -0400 https://speakerdeck.com/koic/rubocop-modularity-and-ast-insights 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大阪Ruby会議04 (https://regional.rubykaigi.org/osaka04/) 大阪Ruby会議04 (https://regional.rubykaigi.org/osaka04/) Sun, 04 Aug 2024 00:00:00 -0400 https://speakerdeck.com/koic/minify-ruby-code https://speakerdeck.com/koic/minify-ruby-code Scrum Fest Kanazawa 2024 https://confengine.com/conferences/scrum-fest-kanazawa-2024 Scrum Fest Kanazawa 2024 https://confengine.com/conferences/scrum-fest-kanazawa-2024 Sat, 20 Jul 2024 00:00:00 -0400 https://speakerdeck.com/koic/permanent-agility https://speakerdeck.com/koic/permanent-agility RubyKaigi 2024 https://rubykaigi.org/2024/presentations/koic.html#day2 RubyKaigi 2024 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2023 00:00:00 -0400 https://speakerdeck.com/koic/a-practitioners-journey-from-ruby-1-dot-8-to-present https://speakerdeck.com/koic/a-practitioners-journey-from-ruby-1-dot-8-to-present Thu, 20 Jul 2023 00:00:00 -0400 https://speakerdeck.com/koic/a-story-featuring-right-hand-archetype https://speakerdeck.com/koic/a-story-featuring-right-hand-archetype Mon, 26 Jun 2023 00:00:00 -0400 https://speakerdeck.com/koic/without-practice-no-emergence https://speakerdeck.com/koic/without-practice-no-emergence