限制C ++函数允许的throws有什么好处？ [英] What is the benefit to limiting throws allowed by a C++ function?

问题描述

从C ++函数声明可能的异常抛出的好处是什么？换句话说，添加关键字 throw（）实际上是做什么的？

What is the benefit of declaring the possible exception-throws from a C++ function? In other words, what does adding the keyword throw() actually do?

声明例如 void do_something（）throw（）; 应该保证没有异常从 do_something（）然而，这似乎不适用于 do_something（）中调用的函数，因此这是一个弱的保证。

I've read that a function declaration such as void do_something() throw(); should guarantee that no exceptions originate from the do_something() function; however, this doesn't seem to hold true of functions called within do_something(), thus making it a weak guarantee.

请概述此语言功能的实用性（和最佳用例）。

Please outline the usefulness (and best-use cases) of this language feature.

推荐答案

Sutter

http://www.ddj.com/architect/184401544

简短版本为

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2. 除非可能为空。

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