Two clarifications:

On Saturday 19 February 2005 22:33, Benjamin Franksen wrote:
>       instance RecordField R Label_field1 T1 where
>         getField (Rec x _) _ = x
>         putField (Rec _ y) _ v = Rec v x

s/Rec/R/

> I wonder if something similar could be done with TH. The labels would need
> to have a different name (e.g. l_field1, l_field2), so they don't collide
> with their Haskell98 definitions, but otherwise everything should be as
> above.

What I mean is: keep the record syntax and everything as it is now, but 
additionally use TH in order derive the corresponding first class labels as 
indicated above. The question is if a function 'generateLabels' can be 
defined with TH. I remember darkly that TH is (or once was) restricted to 
Haskell98, and so cannot be used to generate multi parameter class instances.

Ben
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