摘要：
#1: Open-Close printciple (OCP) Classes should be open for extension and closed for modification #2:Don't Repeat yourself (DRY) Avoid duplicate code by abstracting out things that are common and pla... 阅读全文
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摘要：
#1: Open-Close printciple (OCP) Classes should be open for extension and closed for modification #2:Don't Repeat yourself (DRY) Avoid duplicate code by abstracting out things that are common and pla... 阅读全文
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