Is it possible to create a map entry directly with the MapEntry type? I see in
the source code of CLJS that the type expects 3 parameters, key val and hash.
I've glanced quickly at usages and it seems most usages revolves to (MapEntry.
k v nil). Is it ok to use in app? Is it too low-level? I'd like to use it in
situations where I populate a map from vectors, like (silly example)
(into {} (map-indexed (fn [idx v] (MapEntry. idx val nil) [1 2 3]))
And what does it mean in cljc code ? Is this ok in Clojure too?
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