ype" title="A two-dimensional array based on a rectangular sequential array Example: var o = new polygonal." href="../../polygonal/ds/Array2.html">Array2</a>&lt;<span class="type">T</span>&gt;</code></h3><div class="doc"><p>Swaps the element at column/row <code>x0</code>, <code>y0</code> with the element at column/row <code>x1</code>, <code>y1</code>.</p></div></div><div class="field "><a name="swapCol"></a><h3 class="anchor"><code><a href="#swapCol"><span class="identifier">swapCol</span></a> (<span style=