AssociationQ[expr]
gives True if expr is a valid Association object, and False otherwise.
AssociationQ
AssociationQ[expr]
gives True if expr is a valid Association object, and False otherwise.
Examples
Basic Examples (2)
Association constructed from rules yields a valid object:
Valid Association object allows extraction of values given keys:
If arguments are not rules, Association remains unevaluated:
Association that is not valid has no special properties:
See Also
Related Guides
Related Links
History
Text
Wolfram Research (2015), AssociationQ, Wolfram Language function, https://reference.wolfram.com/language/ref/AssociationQ.html.
CMS
Wolfram Language. 2015. "AssociationQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/AssociationQ.html.
APA
Wolfram Language. (2015). AssociationQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AssociationQ.html
BibTeX
@misc{reference.wolfram_2025_associationq, author="Wolfram Research", title="{AssociationQ}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/AssociationQ.html}", note=[Accessed: 15-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_associationq, organization={Wolfram Research}, title={AssociationQ}, year={2015}, url={https://reference.wolfram.com/language/ref/AssociationQ.html}, note=[Accessed: 15-August-2025]}