div class="spec value anchored" id="val-is_zero"><a href="#val-is_zero" class="anchor"></a><code><span><span class="keyword">val</span> is_zero : <span><a href="#type-arr">arr</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_positive"><a href="#val-is_positive" class="anchor"></a><code><span><span class="keyword">val</span> is_positive : <span><a href="#type-arr">arr</a> <span class="arrow">&#45;&gt;</span></span