I have to agree about the generics, and agree a bit about error handling too.
Also, I wasn't impressed by the speed. I wrote a program in Ruby, Go and Elixir and expected Go to win, but is was 1x, 5x, 20x respectively, and I could never figure out why there was such a discrepancy.
Even so, if they added generics and improved performance, I would be very inclined to use it. It is surprisingly comfortable to code in.
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