How to create dispatch queue in Swift 3

Question

In Swift 2, I was able to create queue with the following code:

let concurrentQueue = dispatch_queue_create(\"com.swift3.imageQueue\", DISPATCH_QUEUE_CONCURR         


        

Answer 1

 DispatchQueue.main.async {
          self.collectionView?.reloadData() // Depends if you were populating a collection view or table view
    }


OperationQueue.main.addOperation {
    self.lblGenre.text = self.movGenre
}

//use Operation Queue if you need to populate the objects(labels, imageview, textview) on your viewcontroller

Answer 2

 let newQueue = DispatchQueue(label: "newname")
 newQueue.sync { 

 // your code

 }

Answer 3

DispatchQueue.main.async(execute: {
   // code
})

Answer 4

For Swift 3

   DispatchQueue.main.async {
        // Write your code here
    }

Answer 5

Swift 3

you want call some closure in swift code then you want to change in storyboard ya any type off change belong to view your application will crash

but you want to use dispatch method your application will not crash

async method

DispatchQueue.main.async 
{
 //Write code here                                   

}

sync method

DispatchQueue.main.sync 
{
     //Write code here                                  

}

Answer 6

it is now simply:

let serialQueue = DispatchQueue(label: "my serial queue")

the default is serial, to get concurrent, you use the optional attributes argument .concurrent