.<span class="id">water</span> = <span class="id">cell1</span>.<span class="id">water</span> + <span class="id">cell2</span>.<span class="id">water</span>
    <span class="id">cell2</span>.<span class="id">water</span> = <span class="number">0</span>
<span class="reserved">end</span>)
</code></pre>




</dd>


						    	
							
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