ExOption

Option/Maybe library inspired by Rust.

This library represents an optional value: every option is either some and contains a value, or none.

Installation

If available in Hex, the package can be installed by adding ex_option to your list of dependencies in mix.exs:

def deps do
  [
    {:ex_option, "~> 0.1.4"}
  ]
end

Usage

iex> some_message = ExOption.some("Hello")
{:some, "Hello"}

iex> none_message = ExOption.none()
{:none}

iex> some_message
...> |> ExOption.map(fn x -> x <> " World!" end)
...> |> ExOption.unwrap()
"Hello World!"

iex> none_message
...> |> ExOption.map(fn x -> x <> " World!" end)
...> |> ExOption.unwrap_or("Good Bye!")
"Good Bye!"

Documentation can be generated with ExDoc and published on HexDocs.

Once published, the docs can be found at https://hexdocs.pm/ex_option.