dkw5877

import UIKit

final class StackViewController: UIViewController {

    private let stackView: UIStackView = {
        let stackView = UIStackView()
        stackView.axis = .vertical
        stackView.alignment = .fill
        stackView.distribution = .fill

dkw5877

import UIKit

final class ContainerViewController: UIViewController {

    private let imageController:UIViewController
    private let listController:UIViewController
    
    init(imageController:UIViewController, listController:UIViewController) {
        self.imageController = imageController

dkw5877

enum AnimalType {
    case tiger
    case elephant
    case otter
}

struct Animal:Equatable {
    let name:String
    let type:AnimalType
}

dkw5877

let strings1 = ["a", "b", "c"]
let strings2 = ["a", "b", "c"]
var isEqual = strings1 == strings2 //true

let strings1 = ["a", "b", "c"]
let strings2 = ["a", "b", "d"]
var isEqual = strings1 == strings2 //false

let strings1 = ["a", "b", "c"]
let strings2 = ["b", "c", "a"]

dkw5877

/* create the image at original size */
let image = UIImage(named: "Landscape-1276x800.jpg")!

/*
 * create bounding rect with largest possible height based on width
 * this will get you the aspect height for the speficied width
 */
let boundingRect = CGRect(x: 0, y: 0, width: 300, height:CGFloat.greatestFiniteMagnitude)

/*

dkw5877

struct TestDecode:Codable {
    let updated:Date
}

let json = """
{
   "updated":"2019-2-21T02:02:55-08:00"
}
"""

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let dates = ["key_1":Date()]
let encoder = JSONEncoder()
encoder.dataEncodingStrategy = .base64
encoder.outputFormatting = [.sortedKeys, .prettyPrinted]
let encoded = try? encoder.encode(object)
print(String(data: encoded!, encoding: .utf8)!)

//output
{
   "key_1" : 574821298.18860102

dkw5877

let object = ["keyOne":"Bengal tiger", "keyTwo":"Siberian tiger", "keyThree ":"white rhino", "keyFour":"African elephant"]
let encoder = JSONEncoder()
encoder.keyEncodingStrategy = .convertToSnakeCase
encoder.outputFormatting = [.sortedKeys, .prettyPrinted]
let encoded = try? encoder.encode(object)
print(String(data: encoded!, encoding: .utf8)!)

//output
{
   "key_four" : "African elephant",

dkw5877

let object = ["key1":"Bengal tiger", "key2":"Siberian tiger", "key3 ":"white rhino", "key4":"African elephant"]
let encoder = JSONEncoder()
encoder.outputFormatting = [.sortedKeys, .prettyPrinted]
let encoded = try? encoder.encode(object)
print(String(data: encoded!, encoding: .utf8)!)

//output
{
   "key1" : "Bengal tiger",
   "key2" : "Siberian tiger",

dkw5877

let object = ["key1":"bengal tiger", "key2":"siberian tiger", "key3":"white rhino", "key4":"african elephant"]
let encoder = JSONEncoder()
encoder.outputFormatting= .prettyPrinted
let encoded = try? encoder.encode(object)
print(String(data: encoded!, encoding: .utf8)!)

//output
{
   "key3" : "white rhino",
   "key1" : "bengal tiger",