Dynamically define function using module attribute as name

.ex

defmodule Definer do
  defmacro define(do: block) do
    quote bind_quoted: [block: Macro.escape(block)] do
      func_name = @name |> String.to_atom |> Macro.var(__MODULE__)
      def unquote(func_name) do
        unquote(block)
      end
    end
  end
end

defmodule Foo do
  import Definer
  @name "test_func"
  define do
    IO.puts "Hi, mom!"
  end
end

Foo.test_func
# => Hi, mom!