Re: example of derive using Template Haskell?
"S. Alexander Jacobson" <[email protected]> Tue, 11 Jan 2005 12:35:40 -0500 (Eastern Standard Time)
| Newsgroups | gmane.comp.lang.haskell.template |
|---|---|
| Message-ID | <Pine.WNT.4.61.0501111233420.3932@philo> |
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 <[email protected]> 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