Elixir vs Go

main.ex

with(
  {:ok, data} <- File.read "testdata/hello",
  {:ok, config} <- Poison.decode data,
  {:ok, result} <- Peka.do_something config
) do
  IO.puts result
else
  {:error, :enoent} ->
    IO.puts "file not found"
  {:error, :peka_mega_error} ->
    IO.puts "peka died"
  {:error, :peka_general_error} ->
    IO.puts "peka is sad"
  {:error, error} ->
    IO.puts "Unknown error {#inspect error}"
    IO.inspect error
end

main.go

func main() {
	content, err := ioutil.ReadFile("testdata/hello")
	if err != nil {
		log.Fatal(err)
	}

	var Config config
	err := json.Unmarshal(content, &config)
	if err != nil {
		log.Fatal(err)
	}
  
	err := peka.DoSomething(config)
	if err != nil {
		log.Fatal(err)
	}
}