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A comment on How to Interview Engineers. Parent comment

Re:How to Interview Engineers by Flenser on Tuesday June 27, 2017 @06:12AM (#14643826) 

  a = Appointment 1 start
  A = Appointment 1 end
  b = Appointment 2 start
  B = Appointment 2 end
The only predicates are: a < A, b < B

The complete set of orderings are thus:

  aAbB - no overlap
  bBaA - no overlap
  abAB - partial overlap
  baBA - partial overlap
  abBA - complete overlap of one appointment inside the other
  baAB - complete overlap of one appointment inside the other
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