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C++语言导学(原书第2版)
book

C++语言导学(原书第2版)

by 本贾尼 斯特劳斯特鲁普
August 2021
Intermediate to advanced
450 pages
5h 35m
Chinese
Pearson
Content preview from C++语言导学(原书第2版)

3.5 错误处理

错误处理是一个大而复杂的主题,其内容和涉及面都远远超越了语言设施层面,而深入到了程序设计技术和工具的范畴。不过C++还是提供了一些对此有帮助的特性,其中最主要的一个工具就是类型系统。我们不应基于内置类型(如char、int和double)和语句(如if、while和for)来费力地构造应用程序,而是应构造适合我们应用的类型(如string、map和regex)和算法(如sort()、find_if()和draw_all())。这些高级构造简化了程序设计,减少了产生错误的可能(例如,你不太可能对一个对话框应用树遍历算法),同时也增加了编译器捕获错误的机会。大多数C++构造都致力于设计并实现优雅且高效的抽象(如用户自定义类型和使用这些自定义类型的算法)。这种抽象机制的一个效果就是运行时错误的捕获位置与错误处理的位置被分离开来。随着程序规模不断增大,特别是库的广泛使用,处理错误的标准变得愈加重要。在程序开发中,尽早地明确错误处理策略是一个好办法。

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Publisher Resources

ISBN: 9787111633280