ã¡ãªã¿ã«ãæåã«çµè«ã ãè¨ã£ã¦ããã¨ãã¾ãSandi Metzã®ããªãã¸ã§ã¯ãæåè¨è¨å®è·µã¬ã¤ãããèªããã¨ãã話ã§ã ããã ãã§çµãã£ã¦ãã¾ãããæ°æã¡ã¯ããããä¸è¦ªåéãããããã¡ãã£ã¨Railsåãã®è©±ãæ¸ããã¨æãã ãã è¨ããããã¨ã¯ãããåãã£ã¦ãªãã®ã«ä½¿ãã®ã¯æ¢ããã¨ãããã¨ã èªåãæ¬ã§æ¸ãããããæåããããåèã«ãããçµæãªã®ãããããªãããä¸ã®ä¸ã«ã¯æ¬å½ã«é ·ãã¯ã©ã¹ãåå¨ãããã®ã§ãéã«ãµã³ãã«ã§æ¸ãã¨ä»¥ä¸ã®æ§ãªæãã®ã³ã¼ããåå¨ãããããã class HogehogeService # Hogehogeã¯ã¢ãã«åã¾ãã¾ def process(hogehoge, option_a: nil, option_b: nil, option_c: false) history = hogehoge.histories.last unless hogehoge.activ
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