clojure.string/join

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Type: function Added: Clojure 1.2 Examples: 5 Runnable: 4

([coll] [separator coll])

Returns a string of all elements in coll, as returned by (seq coll), separated by an optional separator.

Examples

by pkolloch on 2010-08-20 ▶

(clojure.string/join ", " [1 2 3]) "1, 2, 3"

by Santosh on 2010-10-03 . May have evaluation errors. ▶

;; Splits a string on space character and joins ;; the resulting collection with a line feed character (use '[clojure.string :only (join split)]) (println (join "\n" (split "The Quick Brown Fox" #"\s"))) The Quick Brown Fox nil

by timgilbert on 2015-09-12 ▶

;; Note that empty strings and nils will appear as blank items ;; in the result: (require '[clojure.string :as string]) (string/join ", " ["spam" nil "eggs" "" "spam"]) ;;=> "spam, , eggs, , spam" ;; If you'd like to avoid this, you might do something like this: (string/join ", " (remove string/blank? ["spam" nil "eggs" "" "spam"])) ;;=> "spam, eggs, spam"

by timjimsmith on 2019-02-26 ▶

(require '[clojure.string :as string]) ;; No separator means no separation (string/join [1 2 3]) ;; => "123"

by Kaspazza on 2023-11-30 ▶

(require '[clojure.string :as string]) ;; One element coll returns just that element (string/join ", " ["single"]) ;; => "single"

See also

• clojure.core/split-at (2)
• clojure.core/split-with (1)
• clojure.core/interpose (0)
• clojure.core/apply (14)

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