title: Objective-C pass block as parameter
body: <p>How can I pass a <code>Block</code> to a <code>Function</code>/<code>Method</code>?</p>
  
  <p>I tried <code>- (void)someFunc:(__Block)someBlock</code> with no avail.</p>
  
  <p>ie. What is the <em>type</em> for a <code>Block</code>?</p>