Tokopedia Playground

main.swift

import UIKit
import PlaygroundSupport


//let view2 = UIView()
//view2.alpha = 0.5

let parrentView = UIView(frame: CGRect(x: 0, y: 0, width: 80, height: 80))
parrentView.backgroundColor = .red

let childView = UIView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
childView.backgroundColor = .blue

childView.translatesAutoresizingMaskIntoConstraints = false

parrentView.addSubview(childView)

NSLayoutConstraint.activate([
    childView.bottomAnchor.constraint(equalTo: parrentView.bottomAnchor, constant: 0),
    childView.trailingAnchor.constraint(equalTo: parrentView.trailingAnchor, constant: 0),
    childView.widthAnchor.constraint(equalToConstant: 40),
    childView.heightAnchor.constraint(equalToConstant: 40),
])
//parrentView.addSubview(childView)
//childView.frame = CGRect(x: 20, y: 20, width: 40, height: 40)
//childView.backgroundColor = .cyan
//parrentView.addSubview(childView)

func printNumber()-> String{
    var temp: [Int] = []
    var numberValidator: Int?
    for i in stride(from: 20, to: 0, by: -1){
        if let num = numberValidator, num != 0{
            temp.append(num)
            numberValidator = nil
        }else if i % 5 == 0{
            numberValidator = i
        }else{
            continue
        }
    }
    return temp.map(String.init).joined(separator: ",")
}

print(printNumber())
func printTokopedia(){
    for i in 0..<3{
        print("\(i) => Tokopedia")
    }
}

func printAcademy(){
    for i in 0..<3{
        print("\(i) => Academy")
    }
}

func globalQueueTest(){
    let globalQueu = DispatchQueue.global()
    globalQueu.sync {
        printTokopedia()
    }

    globalQueu.sync {
        printAcademy()
    }
}
globalQueueTest()
PlaygroundPage.current.liveView = parrentView