On 7 Aug., 10:07, Patrick Sullivan <wizardofwestma...@gmail.com>
wrote:
>
> Am I doing something silly here or is this a bug?
You probably are using conj! for the side-effect, but after growing
the hashmap to size 8 conj! returns a different map.
user> (def foo (transient {1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
8}))
#'user/
foo
user> (class
foo)
clojure.lang.PersistentArrayMap
$TransientArrayMap
user> (def new-foo (conj! foo {9
9}))
#'user/new-
foo
user> (class
foo)
clojure.lang.PersistentArrayMap
$TransientArrayMap
user> (class new-
foo)
clojure.lang.PersistentHashMap
$TransientHashMap
user> (identical? foo new-
foo)
false
user> (def foo (conj! foo {9
9}))
#'user/
foo
user> (persistent!
foo)
{1 1, 2 2, 3 3, 4 4, 5 5, 6 6, 7 7, 8 8, 9
9}
remember to capture the return value of the modifying function calls.
Alex
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