me);
</code></pre>
<h4 id="propposfirst">Prop.PosFirst()</h4>
<p>returns a path with the first positional operator $ for a given expression.</p>
<blockquote>
<p>Authors[0].Name &gt; Authors.$.Name</p>
</blockquote>
<pre><code class="lang-csharp">    var path = Prop.PosFirst&lt;Book&gt;(b =&gt; b.Authors[0].Name);
</code></pre>
<h4 id="propposfiltered">Prop.PosFiltered()</h4>
<p>returns a path with filtered positional identifiers $[x] for a given expression.</p>
<blockquote>
<p>Authors[0].Name &gt; Authors.$