title: What does construction ^(int&) mean in c#?
body: <p>I found this construction with decompiler tool. Looks like it is something connected with multithreading. what does mean <code>^(int&amp;)</code> in c#?</p>
  
  <p>upd</p>
  
  <p>It used like variable declaration</p>
  
  <p><code>^(int&amp;) @someLock</code></p>