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You're viewing version 1.2.0 of doubles. The latest stable version of Clojure Core is 1.3.0.

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1.2.0

1.2.0
1.3.0

doubles

clojure.core

(doubles xs)

Casts to double[]

0 Examples top

Source clojure/core.clj:4237 top

(definline doubles
  "Casts to double[]"
  {:added "1.0"}
  [xs] `(. clojure.lang.Numbers doubles ~xs))

Vars in clojure.core/doubles: definline concat list seq

Used in 0 other vars

Comments top

1 comment(s) for doubles.

shockbob

link

Anybody know what this is used for? All I could find is that you can cast an existing double-array to another double-array???

user=> (doubles [1 2 3 4 5])
java.lang.ClassCastException: clojure.lang.PersistentVector cannot be cast to [D (NO_SOURCE_FILE:0)
user=> (doubles (int-array [2 3 2]))
java.lang.ClassCastException: [I cannot be cast to [D (NO_SOURCE_FILE:0)
user=> (doubles (float-array [2 3 2]))
java.lang.ClassCastException: [F cannot be cast to [D (NO_SOURCE_FILE:0)
user=> (doubles (double-array [2 3 2]))
#
user=> (type (double-array [2 3 2]))
[D
user=> (type (doubles (double-array [2 3 2])))
[D
user=>