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Are there any general heuristics, tips, tricks, or common design paradigms that can be employed to convert a recursive algorithm to an iterative one? I know it can be done, I’m wondering if there are practices worth keeping in mind when doing so.
You can often entirely preserve the original structure of a recursive algorithm, but avoid the stack, by employing tail calls and changing to continuation-passing, as suggested by this blog entry. (I should really cook up a better standalone example.)