Elixir by Example: Constants

Constants

Elixir doesn't offer constants per say,
but developers can use module attributes as constants.



defmodule MyModule do
  # A number constant
  @constant 0.1

  # Another constant
  @greeting "Hello, world!"

  def get_constant() do
    @constant
  end

  def hello() do
    @greeting
  end
end

IO.inspect(MyModule.get_constant())
IO.inspect(MyModule.hello())

$ elixir constants.exs
0.1
"Hello, world!"

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