[Haskell-cafe] Records (was Re: [Haskell] Improvements to GHC)

I second this motion! I rather like Simon's proposal. On Nov 17, 2005, at 5:00 PM, Fraser Wilson wrote:

Yeah, I thought you might have tried that at some point :-)

I like http://research.microsoft.com/~simonpj/Haskell/records.html

cheers, Fraser.

On 11/17/05, Joel Reymont wrote: Don't get me started, please :-). I tried making each field a separate class but then needed to compose records of difference field instances which led to HList which led to GHC eating up all my memory and crashing, etc.

I can see where you are going but if I have 250 records with shared fields then that's a whole lot of extra boiler plate code to marshall between the functions with prefixes to the class method implementations. The road to hell is paved with good intentions ;-).

Thanks for the tip, though.

On Nov 17, 2005, at 2:12 PM, Fraser Wilson wrote:

...

To solve this problem I just made them all instances of a class with a gameId function. Still, not ideal.

-- http://wagerlabs.com/