ios swift, how to Convert NSMutableDictionary to nsdictionary
<p>i know obc is</p>

<pre><code>NSMutableDictionary *mutableDict = [[[NSDictionary alloc] initWithObjectsAndKeys:
                              @"value", @"key"] mutableCopy];

NSDictionary *dict = [NSDictionary dictionaryWithDictionary:mutableDict];
</code></pre>

<p>but swift,  how to Convert  NSMutableDictionary to nsdictionary</p>