DateObjectQ [expr]
gives True if expr is a DateObject with valid arguments, and False otherwise.
DateObjectQ
DateObjectQ [expr]
gives True if expr is a DateObject with valid arguments, and False otherwise.
Details
- DateObjectQ [expr] returns False unless expr is a DateObject expression with valid arguments (i.e. has a recognized date specification).
Examples
open all close allBasic Examples (1)
DateObjectQ tests whether an expression is a DateObject with valid arguments:
Applications (1)
DateObjectQ can be used in pattern tests for functions:
Related Guides
History
Text
Wolfram Research (2014), DateObjectQ, Wolfram Language function, https://reference.wolfram.com/language/ref/DateObjectQ.html.
CMS
Wolfram Language. 2014. "DateObjectQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/DateObjectQ.html.
APA
Wolfram Language. (2014). DateObjectQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DateObjectQ.html
BibTeX
@misc{reference.wolfram_2025_dateobjectq, author="Wolfram Research", title="{DateObjectQ}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/DateObjectQ.html}", note=[Accessed: 11-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_dateobjectq, organization={Wolfram Research}, title={DateObjectQ}, year={2014}, url={https://reference.wolfram.com/language/ref/DateObjectQ.html}, note=[Accessed: 11-January-2026]}