title: NS_BLOCK_ASSERTIONS in Objective-C
body: <p>I am using NSAssert() calls within an iPhone application and my understanding from the Apple docs is that assertions are not compiled into the code if NS_BLOCK_ASSERTIONS is defined.</p>
  
  <p>To turn off assertions, in a header file I declare: #define NS_BLOCK_ASSERTIONS</p>
  
  <p>However, the assert code still seems to run.</p>
  
  <p>Is there something I am missing here?</p>
  
  <p>Thanks</p>
  
  <p>John</p>