insert module:Data.Set -package:sets is:exact

insert :: Ord a => a -> Set a -> Set a
containers Data.Set Data.Set.Internal
Insert an element in a set. If the set already contains an element equal to the given value, it is replaced with the new value.
insert :: (Ord k, Ord a) => k -> a -> SetMap k a -> SetMap k a
multimap Data.SetMap
Insert a new key and value in the map.
insert :: Ord a => a -> NESet a -> NESet a
nonempty-containers Data.Set.NonEmpty
O(log n). Insert an element in a set. If the set already contains an element equal to the given value, it is replaced with the new value.
insert :: Keyed a => a -> Set a % 1 -> Set a
linear-base Data.Set.Mutable.Linear
insert :: (Ord a) => a -> Set a -> Set a
set-monad Data.Set.Monad