https://ruby-china.org/yelanxin en-us <p>有没有好用 zookeeper gem</p> <p>最好给个例子，多谢。</p> <p>连续监视一个 znode 的变化，获取 zookeeper 的 notification</p> yelanxin Wed, 14 Aug 2019 15:22:09 +0800 https://ruby-china.org/topics/38939 https://ruby-china.org/topics/38939 <p>大家都是怎么组织代码目录结构的？</p> yelanxin Fri, 24 May 2019 16:15:32 +0800 https://ruby-china.org/topics/38568 https://ruby-china.org/topics/38568 <p>看起来性能很好，很期待。</p> yelanxin Wed, 22 May 2019 13:53:26 +0800 https://ruby-china.org/topics/38559 https://ruby-china.org/topics/38559 <pre class="highlight ruby"><code> <span class="n">a</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">if</span> <span class="n">a</span><span class="p">.</span><span class="nf">nil?</span> <span class="n">a</span> <span class="o">+=</span> <span class="mi">1</span> </code></pre> <p>每次碰到一个为 nil 的变量，都需要判断下，这两条语句能合并写吗？</p> <pre class="highlight ruby"><code> <span class="n">a</span> <span class="o">=</span> <span class="n">a</span><span class="p">.</span><span class="nf">to_i</span> <span class="o">+</span> <span class="mi">1</span> </code></pre> <p>有没有更简单的办法？</p> <pre class="highlight ruby"><code> <span class="n">a</span> <span class="o">||=</span> <span class="mi">0</span> <span class="n">a</span> <span class="o">+=</span><span class="mi">1</span> </code></pre> <p>还有更简单的吗</p> <p>如何做到 +=1 是，自动赋值 0</p> yelanxin Thu, 16 May 2019 12:02:47 +0800 https://ruby-china.org/topics/38538 https://ruby-china.org/topics/38538