This isn't an article about how to use a Haskell CSV parser. If it was, it would be about the cassava package, http://hackage.haskell.org/package/cassava http:

This isn't an article about how to use a Haskell CSV parser. If it was, it would be about the cassava package, http://hackage.haskell.org/package/cassava http://hackage.haskell.org/package/cassava I.e. csvfile <- readFile "nukes-list.csv" case decode csvfile of Left err -> putStrLn err Right v -> V.forM_ v $ \ (a,b,c,d) -> ... I don't know why the author didn't just use one of the fine CSV packages on Hackage.