Interface Builder has few functions that are new in Xcode 6 and they are:

Live rendering functions in exactly the same way as its name suggests. So, what live rendering does is display and render custom objects such as custom buttons, fonts, and so on in your Xcode IDE without building a line of code. So, what this means is that when you update your code for your custom objects, the Interface Builder design canvas will automatically update itself with the new look that you have just entered in the editor without requiring you to build and run your project to see it on the simulator or device. Previously, you had to run your app to see the changes that you did to custom objects, which are elements such as UIButtons, fonts, and so on that you created in storyboard or programmatically and which have a customized look to them. However, now, Apple has made it easier for us by introducing live rendering into Xcode 6 as it...