coryalder

extension UIImage {
    func invertedImage() -> UIImage? {
        
        let img = CoreImage.CIImage(CGImage: self.CGImage)
        
        let filter = CIFilter(name: "CIColorInvert")
        filter.setDefaults()
        
        filter.setValue(img, forKey: "inputImage")

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

gelitenight

/* basic usage */
ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
 
LayoutTraverser.build(new LayoutTraverser.Processor() {
  @Override
  public void process(View view) {
    // do stuff with the view
  }
}).traverse(root);