On 07/08/12 04:07, David Nolen wrote:
You have to be careful when using Clojure or Java operations in core.logic programs. I would recommend avoiding it until you're comfortable with writing pure core.logic programs.

ok, so I watched your video (again!) and you make it clear that one cannot use relational operators in logic programs...I sort of knew that - that is why I'm using core.logic.arithmetic operators instead of the regular [<, >,>=, <=. It turns out that I cannot use [+, -] or 'Math/abs' either yes? Have I understood correctly? what would I do instead for the difference and how would I get the absolute value of the difference? any pointers?

Jim

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