# Function to Map [a] -> [[a]] [closed]

Given [1,2,3], I wrote the following to get [[1],[2],[3]]:

ghci> map return [1,2,3] :: [[Int]]
[[1],[2],[3]]


Is this usage of return idiomatic in Haskell? I'm asking since I could've also used pure instead.

by using return, you very much tell the reader that you are going to work with the list monad;
by using pure you would make them understand your decision in terms of applicative;
by using (:[]), they would simply think that you want to turn a list into a list of singletons.