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1.3.0

into-array

Returns an array with components set to the values in aseq. The array's
component type is type if provided, or the type of the first value in
aseq if present, or Object. All values in aseq must be compatible with
the component type. Class objects for the primitive types can be obtained
using, e.g., Integer/TYPE.

1 Example top

link | changes
```
;; Java doesn't support heterogeneous arrays
;; this will result in an IllegalArgumentException
user=> (into-array [2 "4" "8" 5])
;; Evaluation aborted.

user=> (into-array (range 4))
#<Integer[] [Ljava.lang.Integer;@63d6dc46>

;; if you assign a type, you still have to coerce values
user=> (into-array Byte/TYPE (range 4))
;; Evaluation aborted.

user=> (into-array Byte/TYPE (map byte (range 4)))
#<byte[] [B@68ffefc9>
```
;; Java doesn't support heterogeneous arrays ;; this will result in an IllegalArgumentException user=> (into-array [2 "4" "8" 5]) ;; Evaluation aborted. user=> (into-array (range 4)) #<Integer[] [Ljava.lang.Integer;@63d6dc46> ;; if you assign a type, you still have to coerce values user=> (into-array Byte/TYPE (range 4)) ;; Evaluation aborted. user=> (into-array Byte/TYPE (map byte (range 4))) #<byte[] [B@68ffefc9>

Source clojure/core.clj:3029 top

(defn into-array
  "Returns an array with components set to the values in aseq. The array's
  component type is type if provided, or the type of the first value in
  aseq if present, or Object. All values in aseq must be compatible with
  the component type. Class objects for the primitive types can be obtained
  using, e.g., Integer/TYPE."
  {:added "1.0"
   :static true}
  ([aseq]
     (clojure.lang.RT/seqToTypedArray (seq aseq)))
  ([type aseq]
     (clojure.lang.RT/seqToTypedArray type (seq aseq))))

Vars in clojure.core/into-array:

Used in 0 other vars

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Clojure Core

Namespaces

into-array

clojure.core

1 Example top

See Also top

Source clojure/core.clj:3029 top

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