[Haskell-cafe] can't find in hayoo

Roderick Ford developer at live.com
Wed Sep 29 12:03:17 EDT 2010

I need the trick to get from 

ByteString -> [GHC.Word.Word8]

and Hayoo is not helping.


Super simple I expected.  I haven't even tried to compile it yet.

I am just trying to read in the bytes and encode with base64:


import Codec.Binary.Base64
import Data.ByteString
import System.Directory
import System.Environment

main :: do
        args <- getArgs
        bFileExist <- System.Directory.doesFileExist (args !! 0)
        let bytedata = --ByteString -> [GHC.Word.Word8]
        if bFileExist then putStrLn $ Codec.Binary.Base64.encode bytedata
        else putStrlLn ("File does not exist: " ++ (args !! 0))
        return ()
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