Regarding AST form with qualified call

Questions & Help Questions
4

It’s only normally written in the context of an alias statement, like alias Foo.{Bar, Baz}.

Interestingly, the parser won’t let you write a function named {} explicitly, but one can be created by using a macro to build the AST:

defmodule WeirdMacro do
  defmacro do_fun(name) do
    {:def, [context: Elixir, import: Kernel],
     [
       {name, [context: Elixir],
        [{:x, [if_undefined: :apply], Elixir}, {:y, [if_undefined: :apply], Elixir}]},
       [
         do: {{:., [], [{:__aliases__, [alias: false], [:IO]}, :inspect]}, [],
          [
            {{:x, [if_undefined: :apply], Elixir},
             {:y, [if_undefined: :apply], Elixir}}
          ]}
       ]
     ]}
  end
end

defmodule Foo do
  require WeirdMacro

  WeirdMacro.do_fun(:{})
end

Foo.{:arg1, :arg2}

I’m unsure when such a function would be useful - maybe in a complex DSL? - but it’s neat to see that it’s possible.