title: Ambiguous reference to member '..<' - Swift 4
body: <p>I am using the String+Extensions pod and I am trying to migrate my project to Xcode 9 + Swift 4 and the function below starts to give the error <strong>Ambiguous reference to member '..&lt;'</strong> .</p>
  
  <pre><code>func times(_ n: Int) -&gt; String {
      return (0..&lt;n).reduce("") { $0.0 + self }
  }
  </code></pre>
  
  <p>How to solve it?</p>