Anonymous function style

Questions & Help Questions
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6

But something like this will be optimised by the compiler.
For example:

  def foo(map) do
    map
    |> Enum.map(&String.upcase/1)
    |> Enum.map(&String.upcase(&1))
  end

becomes

foo(_map@1) ->
    'Elixir.Enum':map(
      'Elixir.Enum':map(_map@1, fun 'Elixir.String':upcase/1),
      fun 'Elixir.String':upcase/1).

But &String.upcase/1 should be the preferred form.