Sleepy FizzBuzz

sleepy-fizz.rb

require 'celluloid'

class SleepyFizzBuzz
  include Celluloid
  
  def buzz n
    sleep 0.1 # making the FizzBuzz sleepy!
    
    if n % 15 == 0
      puts 'FizzBuzz'
    elsif n % 3 == 0
      puts 'Fizz'
    elsif n % 5 == 0
      puts 'Buzz'
    else
      puts n
    end
  end
end

fizz = SleepyFizzBuzz.new

1.upto(100) { |n| fizz.async.buzz n } # fast

1.upto(100) { |n| fizz.buzz n } # slow