Alpha - subject to change.
Removes the last item from a transient vector. If
the collection is empty, throws an exception. Returns coll
;; Note how we always use the return value of pop! in these examples ;; for all future modifications, rather than (incorrectly) ignoring the return ;; value and continuing to modify the original transient set. See examples for ;; assoc! and dissoc! for more discussion and examples of this. user=> (def foo (transient [1 2 3])) #'user/foo user=> (count foo) 3 user=> (def foo (pop! foo)) #'user/foo user=> foo #<TransientVector clojure.lang.PersistentVector$TransientVector@1638fff7> user=> (count foo) 2 user=> (def foo (pop! foo)) #'user/foo user=> (count foo) 1 user=> (def foo (persistent! foo)) #'user/foo user=> (count foo) 1 user=> foo [1]
Source
clojure/core.clj:2976
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(defn pop!
"Alpha - subject to change.
Removes the last item from a transient vector. If
the collection is empty, throws an exception. Returns coll"
{:added "1.1"
:static true}
[^clojure.lang.ITransientVector coll]
(.pop coll))
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