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

11 Jan 2005

      I have {-# OPTIONS -fglasgow-exts #-} at the top 
of both modules.  Does that not imply -fth?

I do realize that my example is not valid Haskell 
code.  I am looking for an example of valid 
Haskell code that allows me to derive a class.

Or even just an example of actualy usage of 
[d|...] that works with GHC 6.2.2!

SO far I haven't been able to find one.

-Alex-

On Tue, 11 Jan 2005, Lemmih wrote:
...
On Tue, 11 Jan 2005 11:19:47 -0500 (Eastern Standard Time), S.
Alexander Jacobson  wrote:
...
I understand that '[d|...|]' creates a Q [Dec],
but in practice GHC 6.2.2 interprets it as a
syntax error.  Do I need to do something to enable
it?
[...]
...
From the user guide: "You need to use the flag -fth to switch these
syntactic extensions on (-fth is currently implied by -fglasgow-exts,
but you are encouraged to specify it explicitly).", but you have to
realize that your example is not valid Haskell code.
-- 
Friendly,
 Lemmih
______________________________________________________________
S. Alexander Jacobson tel:917-770-6565 http://alexjacobson.com