How to create a dynamic function name using Elixir macro?

Question

I want to create a function names dynamically. I wrote this macro

defmacro generate_dynamic(name) do
  quote do 
    def add_(unquote(name)) do
    end
  end         


        

Answer 1

Sometimes, as a useful shortcut, you can achieve the same result inline, without writing a macro using an unquote fragment.

defmodule Hello do
  [:alice, :bob] |> Enum.each fn name ->
    def unquote(:"hello_#{name}")() do
      IO.inspect("Hello #{unquote(name)}")
    end
  end
end

Hello.hello_bob    # => "Hello bob"
Hello.hello_alice  # => "Hello alice"