generates a list of associations in which only elements whose keys appear in all the associ are retained.
- 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.
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.
Wolfram Language. 2014. "KeyIntersection." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/KeyIntersection.html.
Wolfram Language. (2014). KeyIntersection. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/KeyIntersection.html