One annoying feature of the POSIX 1003.1 specification is the lack of a no error value.

POSIX 1003.1规格的一个恼人的特征是缺乏无错误值。

youdao

The POSIX 1003.1 standard defines strerror_r , which accepts a pointer to a buffer and a buffer size in addition to the error value.

POSIX 1003.1标准定义strerror _ r，该函数除接受错误值之外，还接受缓冲区中的指针和缓冲区大小。

youdao

This is not really an error value, so there is no corresponding numerical error code.

这不是一个真正的错误值，所以没有相应的数值错误代码。

youdao

But if I say turn this into a float, ah it throws a value error exception.

它就会抛出一个值错误异常了，它会告诉我输入了一种错误的值。

麻省理工公开课 - 计算机科学及编程导论课程节选

I'm much better having an exception get handled at the time of input than to let that prop -- that value rather propagate through a whole bunch of code until eventually it hits an error 17 calls later, and you have no clue where it came from.

不是我期望的格式,这时我最好有一个异常处理,而不是让其传下去,这个值传到代码的整个分支,最终会导致一个错误17调用的发生，并且你不知道这个错误是哪里来的。

麻省理工公开课 - 计算机科学及编程导论课程节选

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