Array of struct not updating outside the closure

Question

I have an array of struct called displayStruct

struct displayStruct{
let price : String!
let Description : String!
} 

I am reading

Answer 1

Firebase observe call to the database is asynchronous which means when you are requesting for the value it might not be available as it might be in process of fetching it.

That's why your both of the queries to count returns 0 in viewDidLoad and DataSource delegeate method.

  databaseRef.child("Post").queryOrderedByKey().observe(.childAdded, with:  { // inside closure }

Inside the closure, the code has been already executed and so you have the values.

What you need to do is you need to reload your Datasource in main thread inside the closure.

   databaseRef.child("Post").queryOrderedByKey().observe(.childAdded, with:  { 
       // After adding to array
       DispatchQueue.main.asyc {
           self.tableView.reloadData()
       } 

    }