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KeySort[assoc]

orders the elements of an association by sorting its keys.

KeySort[assoc,p]

orders the elements of an association using the ordering function p.

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KeySort

KeySort[assoc]

orders the elements of an association by sorting its keys.

KeySort[assoc,p]

orders the elements of an association using the ordering function p.

Details

  • KeySort[assoc] returns an Association object formed in effect by applying Sort to Keys[assoc].
  • In KeySort[assoc,p], the ordering function p is applied to pairs of keys using the same specifications as in Sort.

Examples

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Basic Examples  (2)

Sort the elements in an association by their keys:

Wolfram Language code: KeySort[<|b -> y, c -> z, a -> x|>]

Sort a list of rules:

Wolfram Language code: KeySort[{b -> y, c -> z, a -> x}]

Scope  (1)

Construct an association with Spanish words as keys:

Wolfram Language code: assoc = <|"año" -> 1, "anulado" -> 2, "amigo" -> 3|>

Sorting the keys with Spanish alphabetic order is different from sorting with the default English ordering:

Wolfram Language code: KeySort[assoc, AlphabeticOrder["Spanish"]]
Wolfram Language code: KeySort[assoc]

Properties & Relations  (1)

Use KeySort to sort an association by keys:

Wolfram Language code: assoc = <|"b" -> 3, "a" -> 2, "c" -> 1|>
Wolfram Language code: KeySort[assoc]

Use Sort to sort the association by values:

Wolfram Language code: Sort[assoc]
Wolfram Research (2014), KeySort, Wolfram Language function, https://reference.wolfram.com/language/ref/KeySort.html (updated 2019).

Text

Wolfram Research (2014), KeySort, Wolfram Language function, https://reference.wolfram.com/language/ref/KeySort.html (updated 2019).

CMS

Wolfram Language. 2014. "KeySort." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2019. https://reference.wolfram.com/language/ref/KeySort.html.

APA

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

BibTeX

@misc{reference.wolfram_2026_keysort, author="Wolfram Research", title="{KeySort}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/KeySort.html}", note=[Accessed: 15-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_keysort, organization={Wolfram Research}, title={KeySort}, year={2019}, url={https://reference.wolfram.com/language/ref/KeySort.html}, note=[Accessed: 15-June-2026]}