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Discussion on: Factorialize a Number

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Jordan Kicklighter

I love these types of functional examples because they showcase real situations that benefit from tail-call optimization. Some languages (e.g. Haskell, Scheme) are optimized for this sort of recursion. That means the equivalent Haskell program would actually not cause a stack overflow. This is vital considering Haskell has no concept of an iterative loop, so recursive functions like this are sometimes the only way to express certain logical behaviors 🙂