Created
September 27, 2016 07:04
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ruby's tailcall optimization
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| RubyVM::InstructionSequence.compile_option = { | |
| tailcall_optimization: true, | |
| trace_instruction: false | |
| } | |
| RubyVM::InstructionSequence.compile(<<EOS).eval | |
| def factorial(n, acc = 1) | |
| if n == 0 | |
| acc | |
| else | |
| factorial(n - 1, acc * n) | |
| end | |
| end | |
| EOS | |
| p factorial(100000).to_s.size |
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