MRI Ruby optional tail call optimization

tail_call_optimization.rb

# Comment the below compile_options out and 
# this will crash with stack level too deep. 
# Based on http://timelessrepo.com/tailin-ruby

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

RubyVM::InstructionSequence.new(<<-CODE).eval
  def factorial(n, result = 1)
    return result if n <= 1
    factorial(n - 1, n * result)
  end
CODE

puts factorial(10_000)