title: lldb throwing error: use of undeclared identifier 'NSMakeRange'
body: <p>If I pause an app's execution and try this command in the debugger: <code>po NSMakeRange(0, 1)</code> I receive the error:</p>
  
  <blockquote>
    <p>error: use of undeclared identifier 'NSMakeRange'<br>
    error: 1 errors parsing expression</p>
  </blockquote>
  
  <p>I tried using <code>expr @import Foundation</code> to no avail.</p>