class="Identifier">N</span><span class="Other">,</span> <span class="Identifier">M</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">frm</span><span class="Other">,</span> <span class="Identifier">to</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span></pre></dt>
<dd>
Swap col <cite>frm</cite> with col <cite>to</cite>
&nbsp;&nbsp;<a
href="/tree/master/snail/linsys.nim#L22"
class="link-seesrc" target="_blank">Source</a>
<a hr