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*To*: <tribble>*Subject*: intersection of enclosures*From*: Mark S. Miller <mark>*Date*: Mon, 16 Oct 89 23:05:54 PDT*Cc*: <xtech>*In-reply-to*: <Eric>,41 PDT <8910170229.AA03177@xanadu>

I like your new definition of intersect. I was taken aback for a moment by it's non-commutativity, but this form is more useful. Why is it a function instead of a message send. Now that the left argument also provides the reference dsp (and so is more "important" than the right argument), it'd make even more sense to have it be the message receiver. Date: Mon, 16 Oct 89 19:29:41 PDT From: tribble (Eric Dean Tribble) The new definition of intersect allows me to apply operations to an enclosure that always produce results in the same coordinate system. I think unionWith() should have the same property (commutative only wrt the enclosures defined region). Do you mean superUnion? unionWith is (should be?) only defined for sets. If you mean superUnion, I agree.

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