[Template-haskell] example of derive using Template Haskell?

[S. Alexander Jacobson]

Does  [d|...] work in 6.2.2 and if so, how do I 
enable it?

This code gives a syntax error:

   {-# OPTIONS -fglasgow-exts #-}
   module Tth where

   import Language.Haskell.THSyntax
   import Language.Haskell.Syntax

   fooFunc =  [d|funD "foo" [clause [] (normalB $ litE $ StringL "bar") [] ] |]
   goo = [|2|]

   ---

   {-# OPTIONS -fglasgow-exts #-}
   import Tth
   foo = $(goo)
   $(fooFunc)

If I eliminate the d in "[d|" I get an error about 
Dec conflicting with Exp.

I can actually use template Haskell in 6.2.2, can 
anyone provide an example of deriving a class?

-Alex-



______________________________________________________________
S. Alexander Jacobson tel:917-770-6565 http://alexjacobson.com