Hi, I'm working on a literate haskell document (actually TeX, but the example below is just test) and I'm using ByteStrings in the code. I know I can do: ghci -XOverloadedStrings file.lhs or, after ghci is running I can do: Main> :set -XOverloadedStrings but I'd like to embed a directive in the file so that when loaded in GHCi, I will automatically get OverloadedStrings. This is mainly so that it JustWorks(tm) when I pass the file on to someone else. Is there a way to do this? There is a short example file below. I'm using ghc-7.0.4 from Debian testing. Cheers, Erik ----------8<----------8<----------8<----------8<----------
{-# LANGUAGE OverloadedStrings #-}
This is just text that that ghc/ghci should ignore
import Data.ByteString (ByteString) import qualified Data.ByteString.Char8 as BS
Simple function:
newlineCount :: ByteString -> Int newlineCount bs = BS.foldl foldFun 0 bs where foldFun s ch = if ch == '\n' then s + 1 else s
Once this file is loaded, I should be able to do this: newlineCount "abcd\ncdead\nasdasd\n" ----------8<----------8<----------8<----------8<---------- -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/