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ztellman/option-map.clj

Last active June 3, 2025 15:33
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option-map.clj
user> (defn foo [a & {:keys [b c d]}]
(+ a b c d))
#'user/foo
user> (foo 1 {:b 2 :c 3 :d 4})
Execution error (IllegalArgumentException) at user/foo (form-init9656087236109608629.clj:43).
No value supplied for key: {:b 2, :c 3, :d 4}
user> (foo 1 :b 2 :c 3 :d 4)
10
user> (apply foo 1 (apply concat {:b 2 :c 3 :d 4}))
10
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