dispatchgroup swift playground

dispatchgroup.swift

import UIKit

print("one")
DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
      print("two")
}
print("three")


func testactivation(){
    var complete = false
    
    var dg = DispatchGroup()
    
    for i in 0 ..< 5 {
        if i > 2 {
            break
        }
        dg.enter()
        DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(2 + i) ) {
              print("ii: \(i)")
            dg.leave()
        }
    }
    
    dg.notify(queue:  DispatchQueue.main){
        print("post action")
    }
    
}

testactivation()