<p>Yeah, it could be just <code>if (singleton)</code> but in the past I think I wrote it out for the sake of clarity.  Feel free to change it if you like, but I'm fine with it either way.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br>Reply to this email directly or <a href="https://github.com/mlpack/mlpack/pull/521#issuecomment-188800269">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFN9XpOEkeogPcOIuzyM58CrvzLD6ks5pnwPpgaJpZM4HX7Db.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/mlpack/mlpack/pull/521#issuecomment-188800269"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>