如何快速删除Firebase中的子记录？

Question

I wanted to delete this record in firebase , where i don't have the name of the key. so, I don't know how to do it. can anybody help me with this?

The code for getting array is as follows

var databaseRefer : DatabaseReference!
  let userID = Auth.auth().currentUser?.uid
 databaseRefer = Database.database().reference(withPath: userID!)
 databaseRefer.observeSingleEvent(of: .value, with: { snapshot in
         if !snapshot.exists() { return }
          if snapshot.value is NSNull {
           print("not found")
            } else {
                for child in snapshot.children {
                let snap = child as! DataSnapshot

                   print(dict)

                   dict.forEach { item in

                       print(item.value)
               }
             }
       }
   })

Answer 1

https://firebase.google.com/docs/database/ios/read-and-write

"The simplest way to delete data is to call removeValue on a reference to the location of that data."