RosettaCodeData/Task/Compile-time-calculation/Haskell/compile-time-calculation-1.hs
2023-07-01 13:44:08 -04:00

7 lines
129 B
Haskell

module Factorial where
import Language.Haskell.TH.Syntax
fact n = product [1..n]
factQ :: Integer -> Q Exp
factQ = lift . fact