In your example, Post has a pointer to _User. Can you show an example where something has a pointer to Posts instead? Maybe a "Favorited" or a "Flagged" class, where you store both a pointer to the Post and a _User, and want to query for Posts that have (or haven't) been Favorited (or Flagged)?
In your example, Post has a pointer to _User. Can you show an example where something has a pointer to Posts instead? Maybe a "Favorited" or a "Flagged" class, where you store both a pointer to the Post and a _User, and want to query for Posts that have (or haven't) been Favorited (or Flagged)?