reverse -base +text

reverse :: Text -> Text
text Data.Text.Lazy
O(n) reverse t returns the elements of t in reverse order.
reverse :: Text -> Text
text Data.Text
O(n) Reverse the characters of a string. Subject to fusion.
reverseIter :: Text -> Int -> (Char, Int)
text Data.Text.Unsafe
O(1) Iterate one step backwards through a UTF-16 array, returning the current character and the delta to add (i.e. a negative number) to give the next offset to iterate at.