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Openai/694305e8-d7f8-800e-a8d8-fbf410be6545
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==== ### ==== * COBOLは 現役の開発言語 * 仕様変更=普通に既存コード修正 * 若手も入ってきてた * 「直すのが当たり前」 👉 まだ凍結文化はない ===== #### ===== * 日付2桁問題 * 全国規模で COBOL総点検 * 触った結果: - 思わぬ副作用 - 想定外の不具合 - テスト地獄 👉 ここで多くの現場が学んだ: : ===== - Y2K後、COBOLは延命フェーズ ===== * 新規はJava / C++へ * COBOL要員が減る * 設計者が引退 この頃から: * 既存COBOLは凍結 * 仕様変更は外付け * 再コンパイル禁止 * ブラックボックス扱い 👉 今の運用ルールの原型が完成 ===== ここがポイント。 ===== : これは正確で、 * 書き方はCOBOL85のまま * 新機能ほぼ使わない * でも 触る範囲が限定された つまり: * 書き方は昔と同じ * 立ち位置が変わった ===== - 「触らない」は完全に常識 ===== * 移行案件(MF / ラッピング / API化) * COBOLそのものは 変えない
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