title: Remove "\" (backslash) from String in Swift
body: <p>I have the following code:</p>
  
  <pre><code>let refreshedToken = FIRInstanceID.instanceID().token()
  
  var encriptat3: String = "ope=sql&amp;para=UPDATE xw_usuarios SET IDFIREBASE = '" + refreshedToken! + "' where USUARIO = '" + self.usuari + "'"
  encriptat3 = encriptat3.stringByReplacingOccurrencesOfString("\\", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
  </code></pre>
  
  <p>And the final value of my string is :</p>
  
  <pre><code>"ope=sql&amp;para=UPDATE xw_usuarios SET IDFIREBASE = \'XXXXXXX\' where USUARIO = \'99997\'"
  </code></pre>
  
  <p>And my ask is : How I can remove the "\" from my ending value and build my url correctly?</p>
  
  <p>Currently I'm using Swift 2.3. Thanks.</p>