Hi, all.
I am following an example demonstrating that `transient` can help optimize
mass updates to data structures:
First, a function is defined, which doesn't use transient collection:
(defn naive-into
> [coll source]
> (reduce conj coll source))
This is supposed to run slower than the built-in `into`, because, as the
book said, `into` uses transient collections whenever possible.
But the result shows up in my `repl` is just the reverse.
> user=> (time (do (into #{} (range 1e6)) nil))
> "Elapsed time: 4882.176 msecs"
> nil
> user=> (time (do (naive-into #{} (range 1e6)) nil))
> "Elapsed time: 3745.707 msecs"
> nil
What could be the reason of this?
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