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

I seem to have missed the mail you sent. :- ( Could you resend? -Alex- ______________________________________________________________ S. Alexander Jacobson tel:917-770-6565 http://alexjacobson.com On Tue, 11 Jan 2005, Lemmih wrote:

On Tue, 11 Jan 2005 12:35:40 -0500 (Eastern Standard Time), S. Alexander Jacobson wrote:

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

If you use GHC 6.2.2 then yes. This has changed in GHC 6.3.

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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.

Checkout 'InstanceD' from the data structure 'Dec' and 'reifyDecl'.

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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.

I mailed you an example not so long ago (-:

These two splices are equivalent and work with GHC 6.2.2: $([d| baz = "Hello Template Haskell" |]) $(do fn <- valD (varP "baz") (normalB (litE (stringL "Hello Template Haskell"))) [] return [fn])

-- Friendly, Lemmih