Storing keys and values in assocs
Factor handbook > The language > Collections > Associative mapping operations

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Utility operations built up from the Associative mapping protocol:
delete-at* ( key assoc -- old ? )

rename-at ( newkey key assoc -- )

change-at ( ..a key assoc quot: ( ..a value -- ..b newvalue ) -- ..b )

at+ ( n key assoc -- )

inc-at ( key assoc -- )


See also
set-at, delete-at, clear-assoc, push-at