Enable TC-Optimization in Ruby

gistfile1.rb

# https://speakerdeck.com/u/jeg2/p/10-things-you-didnt-know-ruby-could-do

RubyVM::InstructionSequence.compile_option = { :tailcall_optimization => true,
                                               :trace_instruction => false }

eval <<end
  def factorial(n, result = 1)
    if n == 1
      result
    else
      factorial(n - 1, n * result)
    end
  end
end

p factorial(30_000)