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                2.3 最佳實踐 在項目中,采用里氏替換原則時,盡量避免子類的“個性”,一旦子類有“個性”,這個子類和父類之間的關系就很難調和了,把子類當做父類使用,子類的“個性”被抹殺——委屈了點;把子類單獨作為一個業務來使用,則會讓代碼間的耦合關系變得撲朔迷離——缺乏類替換的標準。
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