https://ruby-china.org/vowxie en-us <p>因为想练习列表的一些操作，所以随手在 Google 上搜索了随机生成数字数组的方法 </p> <p>找到了一行代码，想不通为什么可以这么写</p> <pre class="highlight ruby"><code><span class="no">Array</span><span class="p">.</span><span class="nf">new</span><span class="p">(</span><span class="mi">20</span><span class="p">){</span><span class="nb">rand</span><span class="p">(</span><span class="mi">30</span><span class="p">)}</span> </code></pre> vowxie Tue, 22 Sep 2015 22:09:31 +0800 https://ruby-china.org/topics/27438 https://ruby-china.org/topics/27438