PetreVane’s gists

PetreVane / URLSession.dataTask example.swift

Created December 11, 2019 12:37

Simple URLSession Data Task with default Session Configuration

	import UIKit
	import PlaygroundSupport

	// Declare a session configuration
	let defaultConfiguration = URLSessionConfiguration.default
	defaultConfiguration.allowsCellularAccess = true
	defaultConfiguration.waitsForConnectivity = true

	// assign that configuration to a session
	let session = URLSession(configuration: defaultConfiguration)

PetreVane / URLSession.dataTask used when Uploading.swift

Last active February 5, 2020 13:14

Upload some dummy data with URLSession.dataTask

	import UIKit

	// get some dummy json
	let json = "{'name' : 'john snow'; 'age' : '29'}"

	// get a reference to upload server
	let url = URL(string: "https://httpbin.org/post")!

	var request = URLRequest(url: url)

PetreVane / FlyweightPattern.swift

Last active January 24, 2020 17:17

The Flyweight Pattern is a structural design pattern that minimizes memory usage and processing. The flyweight pattern provides a shared instance that allows other instances to be created too. Every reference to the class refers to the same underlying instance.

	import UIKit

	let red = UIColor.red
	let red2 = UIColor.red
	print(red === red2) // proves this is a flyweight

	let color = UIColor(red: 1, green: 0, blue: 0, alpha: 1)
	let color2 = UIColor(red: 1, green: 0, blue: 0, alpha: 1)
	print(color === color2) // proves this is NOT a flyweight

PetreVane / Navigation: Scene Delegate sample.swift

Created January 3, 2020 16:25

This is a sample of Scene delegate methods, showing the basics of navigation in a project without StoryBoard. There are 2 ViewController files in the project: SearchBiewController & FavoritesViewController; each of them is embeded in a Navigation Controller

	import UIKit

	class SceneDelegate: UIResponder, UIWindowSceneDelegate {

	var window: UIWindow?


	func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

	guard let windowScene = (scene as? UIWindowScene) else { return }

PetreVane / Add TapGesture Recognizer.swift

Created January 7, 2020 15:44

This methods adds a gesture recognizer on your current view, which dissmises the keyboard when tapped away

	func dismissKeyboardGesture() {

	let tapGesture = UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing(_:)))
	view.addGestureRecognizer(tapGesture)
	}

PetreVane / Convert Date To Month-Year Format.swift

Created February 2, 2020 15:22

These 2 extensions convert a String to Date, and back to String


	extension Date {
	//2
	func convertToMonthYearFormat() -> String {
	let dateFormatter = DateFormatter()
	dateFormatter.dateFormat = "MMM yyyy"
	return dateFormatter.string(from: self)
	}
	}

PetreVane / CAShapeLayer Shapes.swift

Created April 1, 2020 09:25

Creates rectangles, triangles and ovals

	extension CAShapeLayer {
	static func rectangle(roundedRect: CGRect, cornorRadius: CGFloat, color: UIColor) -> CAShapeLayer {
	let path = UIBezierPath(roundedRect: roundedRect, cornerRadius: cornorRadius)
	let shape = CAShapeLayer()
	shape.path = path.cgPath
	shape.fillColor = color.cgColor
	return shape
	}
	}

PetreVane / Stepper.swift

Created June 20, 2020 19:57

How to initialize a Stepper in SwiftUI


	import SwiftUI

	struct ContentView: View {

	@State private var orderCount = 0

	var body: some View {
	VStack {
	// Initializing a Stepper

PetreVane / Toggle and DatePicker.swift

Created June 20, 2020 19:58

Adding a Toggle and a DatePicker in SwiftUI

	import SwiftUI

	struct ContentView: View {

	private var isActivatedMessage: String {
	return "CatNip mode is " + (isActivated ? "Activated" : "Deactivated")
	}

	private var dateFormater: DateFormatter {
	let dateFormater = DateFormatter()

PetreVane / StarWars text like.swift

Created June 20, 2020 19:58

How to add StarWars text like and heart that changes size and color when pressed

	import SwiftUI

	struct ContentView: View {
	@State private var colorChange = false
	@State private var sizeChange = false

	var body: some View {

	VStack(alignment: .center, spacing: 30) {

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