Hello Cale, Monday, October 23, 2006, 7:19:14 AM, you wrote:
Speaking of boilerplate and the scrapping thereof, Data.Generics could theoretically also be used to write a relatively generic rnf/deepSeq, but in my attempts, it seems to be much much slower than using a specific normal form class. Here's my code from quite a while back. As I recall, it's semantically correct, but ran about an order of magnitude slower. There might be a much better way to do it, I don't really know Data.Generics all that well.
by no means it's surprising - syb library works slower than hand-written or compile-time generated code because it implements _run-time_ polymorphism - data types are tested at run-time and then coerced to their actual types. there is also syb4 approach by Oleg where type classes used for polymorphism - it should have average speed, in theory -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com