Alpha - subject to change.
Adds x to the transient collection, and return coll. The 'addition'
may happen at different 'places' depending on the concrete type.
;; As seen on http://clojure.org/transients
;; array is initially made transient, modified then
;; finally made persistent.
;; Note: This example correctly always uses the return value of conj! for
;; future modifications, not the original value of v. See assoc! examples
;; for some discussion of why this is important.
(defn vrange2 [n]
(loop [i 0 v (transient [])]
(if (< i n)
(recur (inc i) (conj! v i))
(persistent! v))))
user=> (vrange2 10)
[0 1 2 3 4 5 6 7 8 9]
Source
clojure/core.clj:2553
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(defn conj!
"Alpha - subject to change.
Adds x to the transient collection, and return coll. The 'addition'
may happen at different 'places' depending on the concrete type."
{:added "1.1"}
[^clojure.lang.ITransientCollection coll x]
(.conj coll x))
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