AlexFlyce

class DroppingFramesHelper: NSObject {

    private var firstTime: TimeInterval = 0.0
    private var lastTime: TimeInterval = 0.0

    func activate() {
        let link = CADisplayLink(target: self, selector: #selector(update(link:)))
        link.add(to: .main, forMode: .commonModes)
    }

AlexFlyce

extension UIImage {
    class func decodedImage(_ image: UIImage) -> UIImage? {
        guard let newImage = image.cgImage else { return nil }
        // To optimize this, you can some cache control. 
        let colorspace = CGColorSpaceCreateDeviceRGB()
        let context = CGContext(data: nil,
                                width: newImage.width,
                                height: newImage.height,
                                bitsPerComponent: 8,
                                bytesPerRow: newImage.width * 4,

AlexFlyce

import UIKit

class AsyncImageView: UIView {
    private var _image: UIImage?

    var image: UIImage? {
        get {
            return _image
        }

AlexFlyce

extension UIImage {
  class func circularImage(from image: UIImage, size: CGSize) -> UIImage? {
      let scale = UIScreen.main.scale
      let circleRect = CGRect(x: 0, y: 0, width: size.width * scale, height: size.height * scale)

      UIGraphicsBeginImageContextWithOptions(circleRect.size, false, scale)

      let circlePath = UIBezierPath(roundedRect: circleRect, cornerRadius: circleRect.size.width/2.0)
      circlePath.addClip()

AlexFlyce

func testFirstNameNotEmpty() throws {
    let forenames: [String] = customer.forenames

    let firstName =  try XCTUnwrap(forenames.first)
    XCTAssertFalse(firstName.isEmpty)
}

AlexFlyce

struct VpnChecker {

    private static let vpnProtocolsKeysIdentifiers = [
        "tap", "tun", "ppp", "ipsec", "utun"
    ]

    static func isVpnActive() -> Bool {
        guard let cfDict = CFNetworkCopySystemProxySettings() else { return false }
        let nsDict = cfDict.takeRetainedValue() as NSDictionary
        guard let keys = nsDict["__SCOPED__"] as? NSDictionary,