enum.rb

enum = Enum.new(:a, :b, :c)
status = :b

# pattern 1
enum.case status do
  _when(:a) do
    p :a
  end
  _when :b do
    p :b
  end
  _when :c do
    p :c
  end
end

# pattern 2
enum.case(status)
  .when(:a) do
    p :a
  end.when(:b) do
    p :b
  end.when(:c) do
    p :c
  end.end