title: What is the difference between "import" of framework and "linking" with framework?
body: <p>I'm new in Xcode and in Swift language. I'm trying to understand the usage of the "import" in ViewController and the "framework import" in my project. 
  Example: if I use <em>CoreLocation</em>, need I only import <em>CoreLocation</em> in my ViewController, or I need to import <em>CoreLocation.framework</em> in my project too? 
  I saying this because everything works well only using <em>import CoreLocation</em> at the top of my ViewController, without import its framework.</p>
  
  <p>Thanks!</p>