19 Jan
2006
19 Jan
'06
2:58 a.m.
Hi, I tried to create a set of records using Data.Set but it turns out that Rec doesn't implement Ord. Is there a nice solution or you need a new builtin function to do the trick? Sample code: Main> Data.Set.mkSet [(a="apple"), (a="peach")] ERROR - Unresolved overloading *** Type : Ord (Rec (a :: [Char])) => Set (Rec (a :: [Char])) *** Expression : mkSet [(a = "apple"),(a = "peach")] If a new builtin is needed, any pointers where to start? Thanks and Regards, Lajos Nagy Computer Science Ph.D. Student Florida Institute of Technology