on, unless the index passed as
<code>limit</code> prevents offsetting beyond those bounds.</p>

<p><strong>Parameters:</strong>
  <strong>i:</strong> A valid index of the collection.
  <strong>n:</strong> The distance to offset <code>i</code>. <code>n</code> must not be negative unless the
    collection conforms to the <code>BidirectionalCollection</code> protocol.
<strong>Returns:</strong> <code>true</code> if <code>i</code> has been offset by exactly <code>n</code> steps without
  going beyond <code>limi