addToUFM_Directly
:: UniqFM elt -> Unique -> elt -> UniqFM elt
-addToUFM_C :: Uniquable key => (elt -> elt -> elt)
- -> UniqFM elt -> key -> elt -> UniqFM elt
+addToUFM_C :: Uniquable key => (elt -> elt -> elt) -- old -> new -> result
+ -> UniqFM elt -- old
+ -> key -> elt -- new
+ -> UniqFM elt -- result
+
addListToUFM_C :: Uniquable key => (elt -> elt -> elt)
-> UniqFM elt -> [(key,elt)]
-> UniqFM elt