tail-call.md

Tail call

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(100000)

# Result:

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