Hi,
I was investigating an issue in a library which defines a macro that uses
transients, and discovered some unexpected behaviour (at least unexpected
to me).
I would really appreciated it if someone could shed some light on this
behaviour and the best way of dealing with it.
If I do something like:
(def trans (transient {}))
(assoc! trans :a "a")
(assoc! trans :b "b")
(assoc! trans :c "c")
(assoc! trans :d "d")
(assoc! trans :e "e")
(assoc! trans :f "f")
(assoc! trans :g "g")
(assoc! trans :h "h")
(assoc! trans :i "i")
(assoc! trans :j "j")
Then as expected
(:a trans)
=> "a"
and the same for everything up to :h, but I didn't expect
(:i trans)
=> nil
(:j trans)
=> nil
If I do
(dissoc! trans :a)
(assoc! trans :i "i")
(:i trans)
=> "i"
It would appear that the transient map is limited to 8 keys, which I assume
is not the case, so there is something wrong with my understanding of how
these work.
Thanks
Mark
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