 If the array
is empty, returns nil.
</p>
<h3><code class="mendoza-code">(array/peek stack)</code>
</h3>
<p>Returns the last element in stack but does not remove it. Returns
nil if the stack is empty.
</p>
<h2>More array functions
</h2>
<p>There are several more functions in the <code class="mendoza-code">array/</code> namespace
and many more functions that create or manipulate arrays in the core
library. A short list of the author's favorite are below:
</p>
<ul><li><code class="mendoza-code">array/slice</c