marslin1220

import Foundation
import PlaygroundSupport

URLCache.shared = URLCache(memoryCapacity: 0, diskCapacity: 0, diskPath: nil)
PlaygroundPage.current.needsIndefiniteExecution = true

// Refer to the example: https://grokswift.com/simple-rest-with-swift/
let todoEndpoint: String = "https://jsonplaceholder.typicode.com/todo/1"
guard let url = URL(string: todoEndpoint) else {
    print("Error: cannot create URL")

lopspower

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha: