Wolfram: Association. Map Function

By Xah Lee. Date: . Last updated: .

Map Function to Association Keys

KeyMap[ f, asso ]
  • Map function to each key.
  • Return the new association.
KeyMap[ ff, Association[ 5 -> aa, 4 -> bb ] ]
(* <|ff[5] -> aa, ff[4] -> bb|> *)

Map to Values

Map[ f, asso ]
  • Map function to each value.
  • Return the new association.
Map[ ff, Association[ 5 -> aa, 4 -> bb ] ]
(* <|5 -> ff[aa], 4 -> ff[bb]|> *)

Map to Key Value Pair

KeyValueMap[ f, asso ]
  • Map function to each Pair of Key and Value, as 2 args to the function.
  • Return a list.
KeyValueMap[ ff, Association[ 5 -> aa, 4 -> bb ] ]
(* {ff[5, aa], ff[4, bb]} *)