[Template-haskell] TH type not Typeable?
Simon Peyton-Jones
simonpj at microsoft.com
Fri Jun 10 04:06:33 EDT 2005
Perhaps someone can go ahead and add these instances to the TH types?
Ian?
that way it'll be in the next release, at least
Simon
| -----Original Message-----
| From: template-haskell-bounces at haskell.org
[mailto:template-haskell-bounces at haskell.org] On
| Behalf Of Sean Seefried
| Sent: 10 June 2005 04:02
| To: Abraham Egnor
| Cc: template-haskell at haskell.org
| Subject: Re: [Template-haskell] TH type not Typeable?
|
|
| On 10/06/2005, at 10:07 AM, Abraham Egnor wrote:
|
| > I'd just like to pipe up and say that the lack of Typeable and Data
| > instances for the TH types has frustrated me as well.
|
| Me too. But there's a solution. Check out the code that comes with
| the third paper in the "Scrap Your Boilerplate" series. There's a
| module in there called Derive.hs that contains code for deriving
| Typeable and Data instances using Template Haskell. The cool thing
| is, you can use it *on* Template Haskell's data types too.
|
| In fact, I did this in my PanTHeon project available from my web site
| at:
|
| http://www.cse.unsw.edu.au/~sseefried/pantheon.html
|
| However, this uses an older version of the deriving code. You'd
| probably want to get the latest.
|
| Cheers,
|
| Sean
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