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xenophobia/gist:2382581

Created April 14, 2012 07:10
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gistfile1.hs
{-# LANGUAGE TemplateHaskell, QuasiQuotes #-}
import Language.Haskell.TH
import Control.Monad
mapT :: Int -> ExpQ -> ExpQ
mapT count f = do
vars <- replicateM count $ newName "x"
lamE [tupP $ map varP vars] (tupE $ map (appE f . varE) vars)
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