$Failed

$Failed

是某些函数不能执行所要求的命令时返回的一个特殊符号.

更多信息

  • 当 Get 不能找到指定的文件或其他对象时，返回 $Failed.

范例

基本范例  (1)

打开一个不存在的文档是一个返回 $Failed 的操作：

Wolfram Research (1991)，$Failed，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$Failed.html.

文本

Wolfram Research (1991)，$Failed，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$Failed.html.

CMS

Wolfram 语言. 1991. "$Failed." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/$Failed.html.

APA

Wolfram 语言. (1991). $Failed. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/$Failed.html 年

BibTeX

@misc{reference.wolfram_2024_$failed, author="Wolfram Research", title="{$Failed}", year="1991", howpublished="\url{https://reference.wolfram.com/language/ref/$Failed.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_$failed, organization={Wolfram Research}, title={$Failed}, year={1991}, url={https://reference.wolfram.com/language/ref/$Failed.html}, note=[Accessed: 22-November-2024 ]}