此功能:如何从功能
serialExpansion num = Map.fromList (zip (listOfSimpleDividers num) (powers num))
但是当我绑:
serialExpansion :: Int -> Map
serialExpansion num = Map.fromList (zip (listOfSimpleDividers num) (powers num))
我得到的错误:
simplifier.hs:46:26: Not in scope: type constructor or class `Map'
我该怎么申报功能?
最后一段是关键! +1 – fuz 2010-12-06 10:05:07