Demo of array/block parallel assignment

parallel_assignment_demo.rb

def parallel_assignment_test(array, &block)
  block.call array
end

animals = ["pig", "cow", "dog"]

# One
parallel_assignment_test(animals) { |one, two, three|
  puts "One: #{one}"
  puts "-------"
}

# Two
parallel_assignment_test(animals) { |one, two|
  puts "One: #{one}"
  puts "Two: #{two}"
  puts "-------"
}

# Three
parallel_assignment_test(animals) { |one, two, three|
  puts "One: #{one}"
  puts "Two: #{two}"
  puts "Three: #{three}"
  puts "-------"
}