類別 Class、物件 Object 和實體 Instance的差別?[轉錄]
這次要介紹在物件導向技術中三個經常容易搞混的名詞,分別是object、class、instance。首先看一下Object-Oriented Software Engineering這本書對於這三個名詞的定義:
- Object:An object is characterized by a number of operations and a state which remembers the effect of these operations.(p.44)