title: Difference between Force Unwrapping Optionals and Implicitly Unwrapped Optionals
body: <p>I was very confused about forced unwrapping and implicit unwrapping at first. Now, the following understanding comes from my self-study:</p>
  
  <p>There is <strong>no</strong> action available for implicit unwrapping, but there is something called implicitly unwrapped Optionals. Implicitly unwrapped Optionals and normal Optionals are both Optionals, the difference being when accessing an implicitly unwrapped Optional, you confidently know that there is a valid value under the hood and ready for use. Normal Optionals need <strong><code>if let</code> binding</strong> or a <strong>forced unwrapping (<code>!</code>) action</strong> to access the possible values behind the optional variables.  </p>
  
  <p><strong>Summary</strong>: </p>
  
  <p><strong><em>Forced unwrapping</em></strong> is an <strong>action</strong> done on the normal Optionals.</p>
  
  <p><strong><em>Implicitly unwrapped Optionals</em></strong> are <strong>Optionals</strong>, usually used for class initialization and will pass values without exclamation mark when used.</p>
  
  <p><strong>Question</strong>:</p>
  
  <p>Am I right? If my understanding is not precise, I would appreciate it if you correct me.</p>
  
  <p>Thanks</p>