s.</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode stan code-with-copy"><code class="sourceCode stan"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="dt">real</span> foo_lpdf(<span class="dt">real</span> y, <span class="dt">vector</span> theta) { ... }</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<p>Note that for function definitions, the comma is used rather than the vertical bar.</p>
<p>Fo