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Oh, that version takes exponential time to compute. The one-liner I gave computes up to the n-th Fibonacci number in linear time.


Your version is definitely more performant, but the three liner is just a bit nicer to read (especially for beginners) :)


Yes. It depends on what you want to show. Your version shows how to define functions and some simple pattern matching.


Having worked with Haskell for a year now I still can't read much more than functions and pattern matching! :D


Not in Haskell, it doesn't. Haskell stores everything for you, right?


No, it doesn't.




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