&nbsp;<span class="keyword">external</span>&nbsp;unsafe_get&nbsp;:&nbsp;<span class="keywordsign">'</span>a&nbsp;array&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a&nbsp;=&nbsp;<span class="string">"%array_unsafe_get"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;unsafe_set&nbsp;:&nbsp;<span class="keywordsign">'</span>a&nbsp;array&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;<span cl