<h2 class="f3" id="yi1-xie3-chu1-you1-ya3-dai4-ma3-de-san1-da4-fa3-ze2">一、写出优雅代码的三大法则<a class='anchor' href='#yi1-xie3-chu1-you1-ya3-dai4-ma3-de-san1-da4-fa3-ze2' aria-label="Permalink to 一、写出优雅代码的三大法则" role="complementary" aria-hidden="true">#</a></h2><ol data-apple-notes-indent-amount="0"><li>别嵌入太深</li><li>良好的变量命名</li><li>少写重复代码</li></ol>