clojure.core/to-array

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Type: function Added: Clojure 1.0 Examples: 3 Runnable: 2

([coll])

Returns an array of Objects containing the contents of coll, which can be any Collection. Maps to java.util.Collection.toArray().

Examples

by gstamp on 2010-10-01 . May have evaluation errors. ▶

(to-array [1 2 3]) #<Object[] [Ljava.lang.Object;@b2bb14>

by Claj on 2012-02-16 ▶

(def hello (to-array "Hello World!")) (aget hello 1) ;; => \e (aset hello 1 \b) ;;Mutability! Watch out! ;; => \b (dotimes [n (alength hello)] (print (aget hello n))) ;; => Hbllo World! ;; Calling `to-array` on array returns the original, not a copy (identical? (to-array hello) hello) ;; => true

by luiszambon on 2020-09-10 ▶

(class '(1 2 3 4)) ;=> clojure.lang.PersistentList (class (to-array '(1 2 3 4))) ;=> [Ljava.lang.Object; (get (to-array '(1 2 3 4)) 0) ;=> 1

See also

• clojure.core/alength (0)
• clojure.core/char-array (0)
• clojure.core/int-array
• clojure.core/long-array
• clojure.core/into-array (0)
• clojure.core/make-array (0)
• clojure.core/to-array-2d (0)

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