title: Objective C syntax issue related to parameter not getting right data
body: <p>I've been working on a project implementing Hola CDN framework. I'm now running into an issue that I can't pass on current date to the parameter programDay and I traced the source code and I found the below line. What does this below line mean?</p>
  
  <pre><code>self.programDay = ![dict[GETPROGRAMLISTDATA_PROGRAMEDAY] isEqual:[NSNull null]] ? dict[GETPROGRAMLISTDATA_PROGRAMEDAY] : nil;
  </code></pre>