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2 points by drcode 5812 days ago | link | parent

I don't know if I'd actually write something like that in a real program... not because of performance (which isn't good, but merely by a constant factor, so it's not an issue IMHO) but because the errsafe could hide other errors...

that said, the performance, in theory, might actually be better in some cases: lists (but not atoms) will be processed with one less condition.