Episode 80 source

process_intro.ex

defmodule ProcessIntro do
  def greeter() do
    receive do
      _ ->
        IO.puts("Hello, friend!")
    end

    greeter()
  end

  def counter() do
    receive do
      value ->
        IO.puts(value)
        Process.sleep(500)
        send(self(), value + 1)
    end

    counter()
  end

  def doubler() do
    receive do
      value ->
        IO.puts(value)
        Process.sleep(2500)
        send(self(), value * 2)
    end

    doubler()
  end
end