"mdzsyn-keyword">:int</span>]]) <span class="mdzsyn-comment"># -&gt; 4</span></code></pre><h2 id="Using-Buffers--">Using Buffers - <code class="mendoza-code">ffi/write</code> and <code class="mendoza-code">ffi/read</code>
</h2>
<p>While primitive types and nested struct types will be converted to and from Janet values automatically, the FFI
will not dereference pointers for you as a general rule, with the exception of returning string types. You also
cannot use the common C idiom of converting between array