Hash.new with a block

gistfile1.txt

delete = []
create = []

def user_exists?(user_id)
  [1,2].include?(user_id)
end

def create_user?(user_id)
  [3,4].include?(user_id)
end

def delete_user?(user_id)
  [5].include?(user_id)
end

all_users = Hash.new do |hash, user_id|
              if user_exists?(user_id)
                hash[user_id] = [
                                  "existing_first_#{ user_id }",
                                  "existing_second_#{ user_id }"
                                ]
              elsif create_user?(user_id)
                # create user somewhere
                hash[user_id] = [
                                  "created_first_#{ user_id }",
                                  "created_second_#{ user_id }"
                                ]
                create << user_id
              elsif delete_user?(user_id)
                # delete user somewhere
                delete << user_id
              end
            end


[1,2,3,4,5].each do |id|
  all_users[id]
end

puts "all_users"
puts all_users
puts '--------'
puts "deleted"
puts delete
puts '--------'
puts "created"
puts create


# all_users
# {1=>["existing_first_1", "existing_second_1"], 2=>["existing_first_2", "existing_second_2"], 3=>["created_first_3", "created_# second_3"], 4=>["created_first_4", "created_second_4"]}
# --------
# deleted
# 5
# --------
# created
# 3
# 4