Inline lookup in Elixir. https://twitter.com/h4cc/status/950293145618706437

inline_lookup.ex

defmodule InlineLookup do

  # Examples how to handle a static lookup table in Elixir.

  def example1(x) do
    %{1 => "a", 2 => "b", 3 => "c"}[x]
    # Could also be a attribute
    
    # Should be the same as:
    Map.get(%{1 => "a", 2 => "b", 3 => "c"}, x, nil)
  end

  def example2(1), do: "a"
  def example2(2), do: "b"
  def example2(3), do: "c"
  def example2(_), do: nil
  # Functions calls, could be generated at compile time from attribute
  # Not using a map here, so could be optimied by compiler maybe.

end