deftype Result.Ok value: Any, as: ->

  defstatic <Result.Ok> new value: Any, as: ->
    Result.Ok { value: value }
  end

end

defimpl Result, for: Result.Ok, as: ->
  def ok? as: -> true
  def error? as: -> false
  def <Any> unwrap as: -> @value
  def <Any> expect as: -> @value
end