How to draw radial gradients in a CALayer??

I know CAGradientLayer doesn't support radial gradient at the moment and only has option of kCAGradientLayerAxial. ...

What is “self” used for in Swift??

I am new to Swift and I'm wondering what self is used for and why. I have seen it in classes and structures but I r...

Xcode crashes on launch?

I am developing an Application for iOS and I changed nothing in the Application. But at a restart of my Mac, Xcode c...