clojure make change to vector of maps

Question

(def tables [{:table "A" :occupied false :party nil} {:table "B" :occupied false :party nil} {:table "C" :occupied false :party nil}])

1) How do I make a change to a single map with a vector?

ex. set :occupied = true where :table= "C"

2) What about updating all map values? ex. set :occupied = false for all maps

noisesmith · Accepted Answer · 2013-11-10 04:08:00Z

(map (fn [t] (if (= (:table t) "C") (assoc t :occupied true) t)) tables)

(map #(assoc % :occupied false) tables)

Note that these will not change your tables, because they are immutable data structures, this code will instead return a new sequence of tables with the differences you describe.

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