title: How does multithread work in objective-c?
body: <p>In the scenario in which i have a thread launched, can i still acces methods on the parent thread? Is there a specific way to call this methods? If so, what is it? </p>
  
  <p>Note: in my scenario both thread are for data manipulation, they are not interface-related threads ( i know this was to be considered in .NET, don't know it they are in Objective-c).</p>