Welcome to the Treehouse Community
Looking to learn something new?
Question on Sets
At the end of the video, Kenneth mentions that with the exception of union and symmetric difference, order matters. However, order wouldn't matter for intersection, would it? (Seems like order only matters for difference.)
Jeff MudayTreehouse Moderator 27,510 Points
You are correct, order should not matter for intersection.
Here is a stack overflow link that shows an example of the "gotcha" that can happen when you do a set difference (-) rather that the symmetric_difference.