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自己紹介  usa from Inc. (Sendagaya, Tokyo)  @unak (Twitter / GitHub)  Ruby Committer  Windows port maintainer  Stable versions branch maintainer

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宣伝① は (だいたい) Rubyの会社です！

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GitHubアカウントや 技術書等のURLで すぐにご応募可能！ https://recruit.jobcan.jp/pixiv/entry/new/4057 宣伝①

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開発サイクルを促進する クラウド画像変換サービス 宣伝②

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まずはお問い合わせ！ ImageFlux 宣伝②

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SCHRÖDINGER'S BRANCH

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SCHRÖDINGER'S BRANCH RUBY IS DEAD EVERY YEAR

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Development Branch “trunk” BRANCHES

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Development Branch “trunk” BRANCHES Commit! Commit! Commit! Commit! Commit! Revert! Commit! Commit! Revert! Commit! Commit!

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Development Branch “trunk” BRANCHES Merry Christmas! Stable Branch (e.g. “ruby_2_1”)

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Development Branch “trunk” BRANCHES Stable Branch (e.g. “ruby_2_1”) 2.1.0 2.1.1 2.1.2

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Development Branch “trunk” BRANCHES Merry Christmas! Stable Branch “ruby_2_1” Stable Branch “ruby_2_2”

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Development Branch “trunk” BRANCHES Stable Branch “ruby_2_1” Stable Branch “ruby_2_2” 2.2.0 2.1.5 2.1.6 2.2.1 2.2.2 2.1.7

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Development Branch “trunk” BRANCHES Merry Christmas! Stable Branch “ruby_2_1” Stable Branch “ruby_2_2” Stable Branch “ruby_2_3”

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Development Branch “trunk” BRANCHES Stable Branch “ruby_2_1” Stable Branch “ruby_2_2” Stable Branch “ruby_2_3”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Stable Branch “ruby_2_2” Stable Branch “ruby_2_3”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Stable Branch “ruby_2_2” Stable Branch “ruby_2_3” Merry Christmas! Stable Branch “ruby_2_4”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Stable Branch “ruby_2_3” Stable Branch “ruby_2_4”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Stable Branch “ruby_2_3” Stable Branch “ruby_2_4” EoL!!!

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Stable Branch “ruby_2_3” Stable Branch “ruby_2_4” Stable Branch “ruby_2_5” Merry Christmas!

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Security only Branch “ruby_2_3” Stable Branch “ruby_2_4” Stable Branch “ruby_2_5”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Security only Branch “ruby_2_3” Stable Branch “ruby_2_4” Stable Branch “ruby_2_5”

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Development Branch “trunk” BRANCHES Security only Branch “ruby_2_1” Security only Branch “ruby_2_2” Security only Branch “ruby_2_3” Stable Branch “ruby_2_4” Stable Branch “ruby_2_5”

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WHAT IS “EOL”? Never maintained (≒ Never committed) Never released from the branch

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WHAT IS “EOL”? Never maintained (≒ Never committed) Never released from the branch Then, maybe “ruby_2_2” has died, but cannot predicate it…

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If there are releases from another branches but not from the branch, it means death WHAT IS “EOL”?

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If there are releases from another branches but not from the branch, it means death WHAT IS “EOL”? In other word, we can know its death only when “opening the box”

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SCHRÖDINGER'S BRANCH