You can probably boost n-body on 1.2 by replacing arrays with deftypes.
(definterface BodyIsh
(^double getMass [])
(setMass [^double x])
(^double getPosX [])
.....)
(deftype Body [^double ^{:unsynchronized-mutable true} mass ^double
^{:unsynchronized-mutable true} posX .....]
BodyIsh
(getMass [x] mass)
(setMass [x m] (set! mass m)
.....)
And then rewriting the program using Body (and a type annotation on
bodies, of course)
I used interfaces and not protocols here because I am not sure 1.2
supports protocols with primitives.
Best,
Nicolas.
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