It also explains the difference between programming by contract and defensive programming with a clever situation where your customers request that the framework code do the checking.

该书还阐述了在客户请求框架代码进行检查的智能情况下，承包程序设计和防错性程序设计之间的差别。

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By comparing of programming, have indicated difference of instruction code and how used them according to characteristic of numerical control system.

并通过对两种数控系统的编程的比较说明了数控系统指令代码的区别，以及如何针对各数控系统的特点来使用它们。

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BY making use of merits of soft line NC and programming, the causes of great difference in the initial mmachince are found and overcome by software.

利用软线数控的优点，通过编程检测到原数控误差大的原因，并用软件克服之。

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