 class="mendoza-code">(array/peek stack)</code></li></ul><h3><code class="mendoza-code">(array/push stack value)</code>
</h3>
<p>Appends a value to the end of the array and returns the array.
</p>
<h3><code class="mendoza-code">(array/pop stack)</code>
</h3>
<p>Removes the last value from stack and returns it. 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.
