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On Tue, Feb 21, 2012 at 11:35 AM, Paul Hudson <> wrote:
> In theory, this is undoubtedly correct. In practice, I am not aware of a
> large body of functional programs that are much faster than their imperative
> equivalents (I would be very interested if someone could point me at them).
> The other overheads seem to overwhelm the benefits.  All I've seen are edge
> cases and toy programs...

Well, for some examples, Jane Street Capital uses Ocaml for
high-performance, algorithmic trading. Tsuru Capital uses Haskell for
options trading. Those are in the "you are a millisecond late you
lose" game.