摘要: abstract class 和 interface 區(qū)別開來還是容易的。只要弄清楚描述對象本質(zhì)和抽象概念的關(guān)系就好區(qū)分了。當(dāng)描述對象本質(zhì)和抽象概念是"is-a"關(guān)系時使用abstract來抽象描述對象;當(dāng)描述對象本質(zhì)和抽象概念是"like-a"關(guān)系時使用interface來抽象該對象。
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yeafee@夜飛郎it's usually better to solve problems with simplicity and finesse rather than muscle. |