eps occur:</p>

<ol><li>The <code>nextPartialResult</code> closure is called with the initial
result and the first element of <code>numbers</code>, returning the sum:
<code>1</code>.</li><li>The closure is called again repeatedly with the previous call&#39;s
return value and each element of the sequence.</li><li>When the sequence is exhausted, the last value returned from the
closure is returned to the caller.</li></ol>

<p><strong>Parameters:</strong>
  <strong>initialResult:</strong> the initial accumulat