YES!! Thank you so much. And thanks to Thomas also for the suggestion of using Data.ByteString.Base64 ... as the alternative method. Cheers, Roderick

Date: Wed, 29 Sep 2010 11:11:01 -0500 Subject: Re: [Haskell-cafe] can't find in hayoo From: aslatter@gmail.com To: developer@live.com CC: haskell-cafe@haskell.org

On Wed, Sep 29, 2010 at 11:03 AM, Roderick Ford wrote:

...

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 ()

Does 'unpack' do what you want?

Antoine

The idea was to go from Prelude> :t Data.ByteString.readFile Data.ByteString.readFile :: FilePath -> IO Data.ByteString.Internal.ByteString to here Prelude> :t Codec.Binary.Base64.encode Codec.Binary.Base64.encode :: [GHC.Word.Word8] -> String unless there is another/easier way???? Roderick

Date: Wed, 29 Sep 2010 09:23:37 -0700 Subject: Re: [Haskell-cafe] can't find in hayoo From: thomas.dubuisson@gmail.com To: developer@live.com CC: haskell-cafe@haskell.org

By and large hayoo is the alta-vista of Haskell search - it has a huge database but isn't well organized or good at prioritizing. Use Hoogle when doing type-based searches for functions in the typical GHC load.

http://haskell.org/hoogle/?hoogle=%3A%3A+ByteString+-%3E+[Word8]

Also, what's with the non-standard module specification "GHC.Word.Word8"? You should use Data.Word.

Cheers, Thomas

On Wed, Sep 29, 2010 at 9:03 AM, Roderick Ford wrote:

...

ByteString -> [GHC.Word.Word8]