println

clojure.core

  • (println & more)
Same as print followed by (newline)

1 Example top

  • user=> (println "Hello world.")
    Hello world.
    nil
    
    user=> (def items [ "hello" :a 1 (list :b 2) \c {:d 4} #{5 6 7} ])
    #'user/items
    
    ; println is for human-readable output, like a report. Note the lack of quotes around the string "hello" and the unescaped letter "c". 
    user=> (println items)
    [hello :a 1 (:b 2) c {:d 4} #{5 6 7}]
    nil
    
    ; prn outputs items in a machine-readable format, such as in a source
    ; file. Note the double-quotes around the string "hello" and the escaped letter "c".
    user=> (prn items)
    ["hello" :a 1 (:b 2) \c {:d 4} #{5 6 7}]
    nil
    
    ; pr-str produces a string with escaped punctuation, so that println yields the same result as the original prn call.
    user=> (println (pr-str items))
    ["hello" :a 1 (:b 2) \c {:d 4} #{5 6 7}]
    nil
    
    ; Calling println w/o args outputs a newline and nothing else.
    user=> (println)
    
    nil
    ; The newline function does the same.
    user=> (newline)
    
    nil
    user=>
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Plus_12x12 Minus_12x12 Source clojure/core.clj:3323 top

(defn println
  "Same as print followed by (newline)"
  {:added "1.0"
   :static true}
  [& more]
    (binding [*print-readably* nil]
      (apply prn more)))
Vars in clojure.core/println:
Used in 0 other vars

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