Completion handler Firebase observer in Swift

Question

I am making a completion handler for a function which will return a list of objects. When it return value for first time, it works well. But when any change happen into fire

Answer 1

func ListenForChildrenAdded() {

let registerToListenTo = "YourPathHere"

ref.child(registerToListenTo).observeSingleEvent(of: .value) { (snapshot) in
    
    let initialChildren = snapshot.childrenCount
    var incrementer = 0
    
    ref.child(registerToListenTo).observe(.childAdded, with: { (snapshot) in
        
        incrementer += 1
        print("snapshot: \(snapshot.key) #\(incrementer)")

        if incrementer == initialChildren {
            print("-> All children found")
        } else if incrementer > initialChildren {
            print("-> Child Was Added - Run Some Code Here")
        }
        
    })
}}