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    I spent hours watching WWDC videos this summer and somehow missed that one... Thanks! Commented Oct 14, 2014 at 22:27
  • Is there anyway to set the constraint against the edge? Not that I'm planning to do it but it will be nice to know so I don't accidentally do it and have to debug. Thanks!!! Commented Mar 25, 2015 at 21:33
  • I don't follow - the answer is about setting the constraint to the edge Commented Mar 25, 2015 at 21:35