I'm no edison expert but it seems the problem simply is that you're using overloaded functions and the compiler can't tell which instance you're trying to use. Try adding a type signature to the definition of sorted (I'm not familiar enough with edision to know what the type is) but something like:
let sorted = ... :: SOMETYPEHERE hopefully someone will provide a more complete answer soon, but since no one has replied yet... - Hal -- Hal Daume III "Computer science is no more about computers | [EMAIL PROTECTED] than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume On Tue, 30 Jul 2002 [EMAIL PROTECTED] wrote: > I am quite confused with the collection package provided by > the edison library. Attached is a sample program, what I > wanted to do is to maintain a sorted of Pair of id and time > (sorted by time). The error I got is: > > ghc -package data -package lang test.hs > > test.hs:17: > No instance for `Collection.OrdColl c Pair' > arising from use of `Collection.minElem' at test.hs:17 > in a pattern binding: Collection.minElem sorted > > Actually I don't really understand what a class like > "OrdColl c a" really means and how to use them. Please help! > > Regards, > .paul. > _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell
