title: Can't access constants from one swift file in another
body: <p>I'm converting some code from Objective C to Swift so I can get a handle on Swift.</p>
  
  <p>Basically, in Objective C, I had a header file containing some global constants which were accessible in other Objective C classes. </p>
  
  <p>I changed my .h file to be .swift and changed the constants to look like:</p>
  
  <pre><code>public let INVALID_INTEGER_VALUE = (-32768)
  public let INVALID_LONGLONG_VALUE = (0x8000000000000000)
  ...
  </code></pre>
  
  <p>But when I try to access these in another Swift file, the compiler gives "Use of unresolved identifier..." I tried importing my .swift file, but that also didn't work (as far as I can tell, I shouldn't need to import any of my swift files as they are part of the same module).</p>
  
  <p>Any thoughts?</p>