:: (a -> a -> Bool) -> [a] -> [a] -> [a] package:rio

deleteFirstsBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]
rio RIO.List
The deleteFirstsBy function takes a predicate and two lists and returns the first list with the first occurrence of each element of the second list removed.
unionBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]
rio RIO.List
The unionBy function is the non-overloaded version of union.
intersectBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]
rio RIO.List
The intersectBy function is the non-overloaded version of intersect.