alexhall

Keybase proof

I hereby claim:

• I am alexhall on github.
• I am alexhall (https://keybase.io/alexhall) on keybase.
• I have a public key ASAqRBJeuEw_1GUFIS4T-7cFTtGtTP_WvIWlksYN4zc7jwo

To claim this, I am signing this object:

alexhall

(defn unnest-keys [x]
  (into {} (mapcat (fn [[k v]]
                     (if (map? v)
                       (map (fn [[k' v']]
                              [(str (name k) "." k') v'])
                            (unnest-keys v))
                       [[(name k) v]]))
                   x)))

alexhall

;; internal helper function
(defn default-foo [] "Hello, world!")

;; public API
(def ^:dynamic *foo* default-foo)
(defn bar [] (*foo*))

;; Usage
(bar)
(binding [*foo* #("Goodbye, world!")]

alexhall

user> (defmulti m type)
#'user/m
user> (defmethod m Comparable [_] "comparable")
#<MultiFn clojure.lang.MultiFn@49c1e1e7>
user> (defmethod m Number [_] "number")
#<MultiFn clojure.lang.MultiFn@49c1e1e7>
user> (m "a")
"comparable"
user> (m 7)
; Evaluation aborted (exception complaining about conflicting matches for Number and Comparable)