import example

gistfile1.ex

defmodule ImportExample do

  # on this line Enum is not imported, yet.

  import Enum #imports are not Module-wide. they only apply below the import.

  def all_funcs do
    map([1,2,3], fn n -> n + 1 end) #map is from Enum
  end

  import Enum, only: [filter: 2]

  def only_filter do
    [1,2,3]
    |> filter(fn n -> rem(n, 2) == 0 end)
    #|> map(fn n -> n + 1 end) #uncomment and It wont compile.
  end

  def import_all_inside do
    import Enum # import Enum inside a function
    [1,2,3]
    |> filter(fn n -> rem(n, 2) == 0 end)
    |> map(fn n -> n + 1 end) #but here is works again
  end


end