convert NSDateComponents to NSDate
<p>How can I convert <code>NSDateComponents</code> to <code>NSDate()</code>?</p>

<pre><code>let dateFormatter: NSDateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
dateFormatter.calendar   = NSCalendar(identifier: NSCalendarIdentifierGregorian)

var dateii = NSDate(toDate)// toDate from NSDateComponents  error 1
let dateString = dateFormatter.stringFromDate(toDate) //error 2
</code></pre>

<p>Error 1:</p>

<blockquote>
  <p>Argument labels '(_:)' do not match any available overloads</p>
</blockquote>

<p>Error 2:</p>

<blockquote>
  <p>Cannot convert value of type 'NSDateComponents' to expected argument type 'NSDate'</p>
</blockquote>