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KeySortBy

See Also
- KeySort
- SortBy
- Key
Related Guides
- Associations
- Functional Programming
- See Also
  - KeySort
  - SortBy
  - Key
- Related Guides
  - Associations
  - Functional Programming

KeySortBy

KeySortBy[assoc,f]

sorts the elements of an association in the order defined by applying f to each of their keys.

represents an operator form of KeySortBy that can be applied to an expression.

Details

Keys[KeySortBy[assoc,f]] is equivalent to SortBy[Keys[assoc],f].
KeySortBy[f][assoc] is equivalent to KeySortBy[assoc,f].

Examples

Basic Examples (5)

Sort the association entries by keys in reverse order:

Sort the association by its keys modulo 3:

Sort the entries by the length of their keys:

Sort a list of rules:

Use the operator form of KeySortBy:

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