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krisleech/00-examples.clj

Created January 29, 2018 16:06
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Clojure Typed
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00-examples.clj
(t/ann stringy [t/Str -> t/Str]))
(defn stringy [a] (str a))
(stringy 1) ;; => runtime type error
(defn stringy [a] (symbol a)) ;; => compile time error
(t/ann person '{:name t/Str})
(def person { :name 1 }) ;; error
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