KeyIntersection

KeyIntersection[{assoc1,assoc2,…}]

generates a list of associations in which only elements whose keys appear in all the associ are retained.

Details

  • KeyIntersection returns a list of associations in which all the associations have keys ordered in the same way.
  • The keys appear in order of their first occurrence in the sequence of associ.
  • KeyIntersection can be used not only on Association objects, but also on lists of rules.

Examples

Basic Examples  (4)

Generate a list of associations with common keys:

Generate associations from lists:

Generate associations from a mixed set:

KeyIntersection reorders keys to be in the same order:

Wolfram Research (2014), KeyIntersection, Wolfram Language function, https://reference.wolfram.com/language/ref/KeyIntersection.html.

Text

Wolfram Research (2014), KeyIntersection, Wolfram Language function, https://reference.wolfram.com/language/ref/KeyIntersection.html.

CMS

Wolfram Language. 2014. "KeyIntersection." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/KeyIntersection.html.

APA

Wolfram Language. (2014). KeyIntersection. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/KeyIntersection.html

BibTeX

@misc{reference.wolfram_2024_keyintersection, author="Wolfram Research", title="{KeyIntersection}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/KeyIntersection.html}", note=[Accessed: 25-April-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_keyintersection, organization={Wolfram Research}, title={KeyIntersection}, year={2014}, url={https://reference.wolfram.com/language/ref/KeyIntersection.html}, note=[Accessed: 25-April-2024 ]}