Ways of looping through a collection/enumerable in Elixir

test.ex

iex(6)> for _ <- 1..10 do
...(6)> end
[nil, nil, nil, nil, nil, nil, nil, nil, nil, nil]


iex(7)> Enum.map(1..10, fn _ -> end)
warning: an expression is always required on the right side of ->. Please provide a value after ->
  iex:7

[nil, nil, nil, nil, nil, nil, nil, nil, nil, nil]


iex(8)> Enum.map(1..10, fn x -> x end)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]


iex(9)> for x <- 1..10 do x end
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]