ass="cm-operator">-=</span> <span class="cm-number">1</span>;</span></pre></div><div style="position: relative;"><div style="left: -29px; width: 29px;" class="CodeMirror-gutter-wrapper"><div style="left: 0px; width: 20px;" class="CodeMirror-linenumber CodeMirror-gutter-elt">10</div></div><pre class=""><span>        <span class="cm-variable">x</span> <span class="cm-operator">=</span> <span class="cm-variable-2">i</span>; <span class="cm-comment">// Reference to variable 'x'</span></span></pre></div><div sty