obsidian-gist-taste

concat.ex

defmodule Concat do
  def join(a, b) do
    IO.puts "***First join"
    a <> b
  end

  def join(a, b, sep \\ " ") do
    IO.puts "***Second join"
    a <> sep <> b
  end
end

math.ex

defmodule Math do
  def sum(a, b) do
    a + b
  end
end