TrueQ

TrueQ[expr]

如果 expr 是 True，则产生 True，否则产生 False.

更多信息

范例

基本范例  (1)

仅当输入是明确的 True 时，TrueQ 返回 True：

Wolfram Research (1988)，TrueQ，Wolfram 语言函数，https://reference.wolfram.com/language/ref/TrueQ.html.

文本

Wolfram Research (1988)，TrueQ，Wolfram 语言函数，https://reference.wolfram.com/language/ref/TrueQ.html.

CMS

Wolfram 语言. 1988. "TrueQ." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/TrueQ.html.

APA

Wolfram 语言. (1988). TrueQ. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/TrueQ.html 年

BibTeX

@misc{reference.wolfram_2024_trueq, author="Wolfram Research", title="{TrueQ}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/TrueQ.html}", note=[Accessed: 15-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_trueq, organization={Wolfram Research}, title={TrueQ}, year={1988}, url={https://reference.wolfram.com/language/ref/TrueQ.html}, note=[Accessed: 15-November-2024 ]}