clojure.core/float-array

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Type: function Added: Clojure 1.0 Examples: 3 Runnable: 0

([size-or-seq] [size init-val-or-seq])

Creates an array of floats

Examples

by gstamp on 2010-08-12 . May have evaluation errors. ▶

(float-array [1 2 3]) #<float[] [F@4d8dfa76> (aget *1 2) 3.0

by JulienRouse on 2019-02-18 . May have evaluation errors. ▶

(def f (float-array [1 2 3])) #'user/f f #object["[F" 0x56ce4eda "[F@56ce4eda"] ;;You can transform the array back into a Clojure vector with vec (vec f) [1.0 2.0 3.0] ;;Also with into, works with list vector and set but not map (into [] f) [1.0 2.0 3.0] (into () f) (3.0 2.0 1.0) (into #{} f) => #{3.0 2.0 1.0} (into {} f) Execution error (IllegalArgumentException) at user/eval1691 (form-init8077017244851884694.clj:1). Don't know how to create ISeq from: java.lang.Float

by JulienRouse on 2019-02-18 . May have evaluation errors. ▶

;;Works for vector, list and set (float-array [1 2 3]) #object["[F" 0x6a86faa1 "[F@6a86faa1"] (float-array '(1 2 3)) #object["[F" 0xd5e9fe8 "[F@d5e9fe8"] (float-array #{1 2 3}) #object["[F" 0x7b327946 "[F@7b327946"] ;;But not map (float-array {1 2}) Execution error (ClassCastException) at user/eval2022 (form-init8077017244851884694.clj:1). clojure.lang.MapEntry cannot be cast to java.lang.Number

See also

• clojure.core/aset (1)
• clojure.core/aget (0)

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