Faker method to illustrate blocks @lewagon

block_faker.rb

def fake_complexity(number)
  puts "Launching very smart computation with the most clever algorithm...."
  sleep(1)
  puts ".."
  sleep(1)
  puts "...."
  sleep(1)
  puts "......."

  result = yield(number, 4)

  puts "Pfiou... That was some hard mathematics.."
  return result
end

sum = fake_complexity(6) do |num, factor|
   num * factor
end

puts sum