title: Realm List Filter Swift
body: <pre><code>var numbersDetail = List is type of ContactDetail()
  let predicate = NSPredicate(format: ContactDetail.NUMBER + " = %@", formattedNumber!)
  let realmContactDetail = numbersDetail.filter(predicate).first
  </code></pre>
  
  <p>Fetching ERROR : </p>
  
  <blockquote>
    <p>throw RLMException("This method may only be called on RLMArray
    instances retrieved from an RLMRealm");</p>
  </blockquote>