Factorial: Difference between revisions

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===Iterative===
Standard iterative solution using a <code>for</code> loop:
* <code>range(2, nnum, :incl)</code> creates an inclusive range (<code>2 <= i <= nnum</code>) for iteration
 
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===Recursive===
Standard recursive solution using a pattern matching approach:
* <code>require num >= 0;</code> enforces argument preconditions
* <code>match</code> without arguments is a ''conditional match'', which works like <code>if/else</code> chains.
* Rhovas doesn't perform tail-call optimization yet, hence why this solution isn't tail recursive.
Retrieved from "https://rosettacode.org/wiki/Factorial"