drosenstark

    class func drawHollowCircle(circleColor: UIColor, rect: CGRect, startAngle: CGFloat = 1, endAngle: CGFloat = 360, outerRingProportion: CGFloat = 1, innerRingProportion: CGFloat = 0.5, drawShadow : Bool) {
        
        //// Variable Declarations
        let startAngleCalced: CGFloat = -startAngle + 270
        let endAngleCalced: CGFloat = -endAngle + 270
        let innerRingDiameter: CGFloat = rect.size.width * innerRingProportion
        let innerRingOffset: CGFloat = 0.5 * (rect.size.width - innerRingDiameter)
        let innerRingRect = CGRectMake(innerRingOffset, innerRingOffset, innerRingDiameter, innerRingDiameter)
        let outerRingDiameter: CGFloat = rect.size.width * outerRingProportion
        let outerRingOffset: CGFloat = 0.5 * (rect.size.width - outerRingDiameter)

MaximAlien

// For UIViewController inside UINavigationController
- (void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];
    
    self.navigationController.view.superview.bounds = CGRectMake(0, 0, 300, 300);
    self.navigationController.view.superview.layer.cornerRadius = 2.0f;
}

// Usual presentation

nazywamsiepawel

    func pauseAnimation(){
      var pausedTime = layer.convertTime(CACurrentMediaTime(), fromLayer: nil)
      layer.speed = 0.0
      layer.timeOffset = pausedTime
    }
    
    func resumeAnimation(){
      var pausedTime = layer.timeOffset
      layer.speed = 1.0
      layer.timeOffset = 0.0

eddieespinal

    //This is the swift version of the following gist by @shexbeer https://gist.github.com/shexbeer/cb069d36ca8ec5edb515
    func cropCameraImage(original: UIImage, previewLayer: AVCaptureVideoPreviewLayer) -> UIImage? {
        
        var image = UIImage()
        
        let previewImageLayerBounds = previewLayer.bounds
        
        let originalWidth = original.size.width
        let originalHeight = original.size.height
        

lzell

// (string, swift, bytes, data, buffer, cstring)

print("--- using nulTerminated ---")
let x : String = "hello"
let buf = x.nulTerminatedUTF8
print(buf)

print("\n--- using [UInt8] ---")
let buf2 : [UInt8] = [UInt8](x.utf8)
print(buf2)

onmyway133

protocol P {
  init()
}

extension P {
  init(something: AnyObject) {
    self.init()
    print("P")
  }
}

brianleroux

sns.publish({
  TargetArn: device.arn,
  MessageStructure: 'json',
  Message: JSON.stringify({
    default: 'you will never see this muah!',
    APNS_SANDBOX: JSON.stringify({
      aps: {
        'alert': '',
        'content-available': 1
      },

radutzan

typealias ButtonAction = (button: UIButton) -> Void

class ButtonActionWrapper: NSObject {
    var action: ButtonAction
    
    init(action: ButtonAction) {
        self.action = action
    }
}

cuxaro

    func resizeImage(image: UIImage, newWidth: CGFloat) -> UIImage {
        
        let scale = newWidth / image.size.width
        let newHeight = image.size.height * scale
        
        UIGraphicsBeginImageContext(CGSize(width: newWidth, height: newHeight))
        
        
        image.draw(in: CGRect(x: 0, y: 0,width: newWidth, height: newHeight))
        let newImage = UIGraphicsGetImageFromCurrentImageContext()

kandelvijaya

//: Playground - noun: a place where code can play

import UIKit

//Most precise time keeper
// for more information on the benchmarks go to www.kandelvijaya.com

func timeBlockWithMach(_ block: () -> Void) -> TimeInterval {
    var info = mach_timebase_info()
    guard mach_timebase_info(&info) == KERN_SUCCESS else { return -1 }