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dustingetz/clojure-value-errors.md

Last active January 14, 2020 21:42
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clojure-value-errors.md 
(defn foo! [i]
  (rand-nth (concat
              (range 20)
              [{:cognitect.anomalies/anomaly {:cognitect.anomalies/category :cognitect.anomalies/unavailable}}
               {:cognitect.anomalies/anomaly {:cognitect.anomalies/category :cognitect.anomalies/busy}}
               {:cognitect.anomalies/anomaly {:cognitect.anomalies/category :cognitect.anomalies/forbidden}}])))

(map foo! (range 15))
(18
 12
 8
 13
 1
 14
 13
 #:cognitect.anomalies{:anomaly #:cognitect.anomalies{:category :cognitect.anomalies/unavailable}}
 8
 15
 2
 2
 13
 6
 14)

Do we really want to throw away the rest of the computation? That probably depends what you're doing.

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