Item 12: Exception Safety: Is It Worth It?

条款12：异常安全：它值得吗？

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The mapping is difficult to use and contains many pitfalls that lead to bugs, particularly with respect to thread safety, exception safety, and memory management.

映射不易使用，包含许多导致bug的缺陷，特别关于线程安全性、异常安全性和内存管理的部分。

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A number of developers responded by noting that this kind of design problem is not unique to multi-threading and that there is a difference between "lock safety" and "exception safety."

这篇文章反响热烈，一些开发人员认为这类设计问题不只限于多线程，在“安全锁”和“安全异常”之间也存在不同之处。

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Dershowitz also said statements made by police in Boston seems to contradict the government's reasons for invoking the public safety exception.

CNN: What's next for the Boston Marathon bombing suspect?

Under a 1984 Supreme Court ruling, a public-safety exception allows investigators to question suspects for an unspecified period without giving them a Miranda warning.

WSJ: Judge Made Miranda-Rights Call in Boston Case

The public safety exception does not set a hard time when questioning must stop and the suspect must be taken into court, but it's generally understood to be about 48 hours.

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