clojure.pprint/pprint

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Type: function Added: Clojure 1.2 Examples: 6 Runnable: 0

([object] [object writer])

Pretty print object to the optional output writer. If the writer is not provided, print the object to the currently bound value of out.

Examples

by nipra on 2010-07-15 . May have evaluation errors. ▶

(def big-map (zipmap [:a :b :c :d :e] (repeat (zipmap [:a :b :c :d :e] (take 5 (range)))))) ;;=> #'user/big-map big-map ;;=> {:a {:a 0, :b 1, :c 2, :d 3, :e 4}, :b {:a 0, :b 1, :c 2, :d 3, :e 4}, :c {:a 0, :b 1, :c 2, :d 3, :e 4}, :d {:a 0, :b 1, :c 2, :d 3, :e 4}, :e {:a 0, :b 1, :c 2, :d 3, :e 4}} (clojure.pprint/pprint big-map) ;; {:e {:e 4, :d 3, :c 2, :b 1, :a 0}, ;; :d {:e 4, :d 3, :c 2, :b 1, :a 0}, ;; :c {:e 4, :d 3, :c 2, :b 1, :a 0}, ;; :b {:e 4, :d 3, :c 2, :b 1, :a 0}, ;; :a {:e 4, :d 3, :c 2, :b 1, :a 0}} ;; nil

by phreed on 2015-06-29 . May have evaluation errors. ▶

;; suppose you want to pretty print to a file. (clojure.pprint/pprint *map* (clojure.java.io/writer "foo.txt")) ;; writes the contents of *map* to a file named 'foo.txt'

by mrzor on 2015-12-06 . May have evaluation errors. ▶

;; pprint into a string using with-out-str (with-out-str (clojure.pprint/pprint {:x 1 :y -1})) ;; => "{:x 1, :y -1}\n" ;; pprint into a string using StringWriter (let [out (java.io.StringWriter.)] (clojure.pprint/pprint {:a 1 :b 2} out) (clojure.pprint/pprint {:c 3 :d 4} out) (.toString out)) ;; => "{:a 1, :b 2}\n{:c 3, :d 4}\n"

by ibercode on 2017-11-17 . May have evaluation errors. ▶

;;how to use it with :require and :use ;; :require (ns example.pprinter (:require [clojure.pprint :as pp])) (def myname "John Smith") (pp/pprint myname) -------------- ;;:use (ns example.pprinter (:use clojure.pprint)) (def myname "John Smith") (pprint myname)

by reborg on 2018-09-09 . May have evaluation errors. ▶

;; get Clojure snippets to print nicely (require '[clojure.pprint :as p]) (def lost-formatting "(defn op [sel] (condp = sel :plus + :minus - :mult * :div / :rem rem :quot quot :mod mod))") (p/with-pprint-dispatch p/code-dispatch (p/pprint (clojure.edn/read-string lost-formatting))) ;; (defn op [sel] ;; (condp = sel ;; :plus + ;; :minus - ;; :mult * ;; :div / ;; :rem rem ;; :quot quot ;; :mod mod))

by djblue on 2022-09-07 . May have evaluation errors. ▶

;; pprint with metadata, requires Clojure >= 1.10.2 (require '[clojure.pprint :as p]) (binding [*print-meta* true] (p/pprint ^{:hello :world} {}))

Note by reborg

When using Clojure from the REPL, you don't need to specify clojure.pprint to use pprint or pp. At the REPL (clojure.pprint x) is equivalent to (pprint x).

See also

• clojure.pprint/pp
• clojure.pprint/print-table (0)
• clojure.core/prn
• clojure.core/prn-str (2)
• clojure.core/pr (2)
• clojure.core/pr-str (3)
• clojure.pprint/pprint-tab
• clojure.pprint/*print-miser-width*
• clojure.pprint/*print-right-margin*

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