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geoffeg/map-cast2.clj

Created August 13, 2013 16:23
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map-cast2.clj
; Thanks to http://stackoverflow.com/questions/18202661/casting-values-of-a-map-to-their-proper-types-in-clojure
; for the basis for this, I needed to also support cases where a value in `input` was empty when the cast occured.
(def input {:a "1" :b "2.5" :c "more" :d "string" :e "keys" :f ""})
(def typetrans {:a #(Long/parseLong %) :b #(Double/parseDouble %) :f #(Integer/parseInt %)})
(defn cast-fields [csvmap]
(reduce-kv
(fn [acc k v]
(update-in acc [k] #(if-not (clojure.string/blank? %) (v %))))
input typetrans))
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