How to deselect a UITableViewCell using clearsSelectionOnViewWillAppear
Swift version: 5.0
When a user taps a table view row, it automatically gets highlighted by iOS, and frequently we use that action to show another view controller with more detailed information. When the user goes back, though, you probably want their selection to go away so that it doesn't remain selected, and if you're using a UITableViewController that's easy to do with clearsSelectionOnViewWillAppear
If you set this property to be true the user's selected cell will automatically be deselected when they return to the table view. It does this intelligently, though: the row starts selected, and animates to be deselected, meaning that the user gets a brief reminder of the row they tapped before it gets deselected.
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Available from iOS 3.2
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