Method Mapping Demo

scratch.rb

class Actions
  def action_a
    puts 'A'
  end

  def action_b
    puts 'B'
  end

  def action_c
    puts 'C'
  end
end

action_object = Actions.new

ROLE_TO_ACTION = {
    alpha: [
        action_object.method(:action_a),
        action_object.method(:action_b),
        action_object.method(:action_c)
    ],
    beta: [
        action_object.method(:action_a),
        action_object.method(:action_c)
    ],
    gamma: [
        action_object.method(:action_b)
    ]
}

puts "Actions"
ROLE_TO_ACTION.each do |role, action_list|
  puts "#{role} role"
  action_list.map &:call
end


### Outputs
#
#
# Actions
# alpha role
# A
# B
# C
# beta role
# A
# C
# gamma role
# B