Elixir "@foo bar" macro example

example.ex

defmodule MyMacro do
  defmacro @{name, _meta, [arg]} do
    IO.inspect "Your #{name} is a #{arg}"
  end

  defmacro __using__(_) do
    quote do
      import Kernel, except: [@: 1]
      import unquote(__MODULE__)
    end
  end
end

defmodule Example do
  use MyMacro

  @fruit "banana"
  # Outputs "Your fruit is a banana" at compile time.
end