Haskell compile time function calculation
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Published on 2010-03-19T08:17:55Z
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2010/03/19
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haskell
|compile-time
I would like to precalculate values for a function at compile-time.
Example (real function is more complex, didn't try compiling):
base = 10
mymodulus n = n `mod` base -- or substitute with a function that takes
-- too much to compute at runtime
printmodules 0 = [mymodulus 0]
printmodules z = (mymodulus z):(printmodules (z-1))
main = printmodules 64
I know that mymodulus n
will be called only with n < 64
and I would like to precalculate mymodulus
for n
values of 0..64
at compile time. The reason is that mymodulus
would be really expensive and will be reused multiple times.
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