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(require '[clojure.string :as str]) | |
(defn rename-underscore [sym] | |
[(symbol (str/replace (name sym) \_ \-)) | |
(keyword sym)]) | |
(defn udestructure [[lhs expr]] | |
(if (and (map? lhs) | |
(vector? (:_keys lhs))) | |
(let [msym (gensym) | |
bind-lhs (->> (:_keys lhs) | |
(map rename-underscore) | |
(into {}))] | |
[msym expr | |
bind-lhs msym | |
(dissoc lhs :_keys) msym]) | |
[lhs expr])) | |
(defmacro letu [bindings & body] | |
(let [bents (partition 2 bindings)] | |
`(let [~@(mapcat udestructure bents)] | |
~@body))) | |
(comment | |
(letu [{a :a :_keys [ugly_name uglier_long_name]} {:ugly_name :foo | |
:uglier_long_name :bar | |
:a :baz}] | |
(= [ugly-name | |
uglier-long-name | |
a] | |
[:foo :bar :baz]))) | |
;; true |
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