title: Swift 3 replacingOccurrences regex
body: <p>I'm having trouble with my replacingOccurrences function. I have a string like so:</p>
  
  <pre><code>let x = "&amp;john &amp;johnny &amp;johnney"
  </code></pre>
  
  <p>What I need to do is remove only "&amp;john"</p>
  
  <p>So I have this code:</p>
  
  <pre><code>y = "&amp;john"
  x = x.replacingOccurrences(of: y, with: " ", options: NSString.CompareOptions.regularExpression, range: nil)
  </code></pre>
  
  <p>The problem I get is that this removes All instances of john... And I'm left with:</p>
  
  <pre><code>"ny ney"
  </code></pre>
  
  <p>Also I thought about setting the range, however, that wont really solve my problem because the names could be in a different order.</p>