Clojure functions 3
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This document provides examples of Clojure functions including select-keys to select keys from a map, shuffle to randomly shuffle a collection, set-error-handler to set an error handling function for an agent, and some-fn to apply functions sequentially and return the first truthy value. It also mentions using set-error-mode to configure how errors are handled for an agent.
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![Select-keys
user => (prn (select-keys {:a 1 :b 2 :c 3} [:a :b]))
{:b 2, :a 1}
nil](https://image.slidesharecdn.com/clojurefunctions-3-111010152312-phpapp02/85/Clojure-functions-3-2-320.jpg)
![shuffle
user => (shuffle '(1 2 3 4 5 6))
[1 6 4 5 3 2]](https://image.slidesharecdn.com/clojurefunctions-3-111010152312-phpapp02/85/Clojure-functions-3-3-320.jpg)
![Set-error-handler - set-error-mode
(def bond (agent 1))
(defn handle-log-error [the-agent the-err]
(println (str "the Agent " the-agent " threw the exception " the-err))
)
(set-error-handler! bond handle-log-error)
(set-error-mode! bond :fail)
(send bond / 0)](https://image.slidesharecdn.com/clojurefunctions-3-111010152312-phpapp02/85/Clojure-functions-3-4-320.jpg)
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Clojure functions 3
- 1. Clojure Example Functions ilegra - LDC By Jackson dos Santos
- 2. Select-keys user => (prn (select-keys {:a 1 :b 2 :c 3} [:a :b])) {:b 2, :a 1} nil
- 3. shuffle user => (shuffle '(1 2 3 4 5 6)) [1 6 4 5 3 2]
- 4. Set-error-handler - set-error-mode (def bond (agent 1)) (defn handle-log-error [the-agent the-err] (println (str "the Agent " the-agent " threw the exception " the-err)) ) (set-error-handler! bond handle-log-error) (set-error-mode! bond :fail) (send bond / 0)
- 5. some-fn user => ((some-fn odd?) 2 4 6) => false It works just for clojure 1.3....