https://ruby-china.org/hgq114 en-us <p>[ 总数：5, 共 1 页 ] 每页显示：20 50 100</p> <p>想用正则获取到页数“5”，请达人指教</p> hgq114 Fri, 12 Apr 2013 16:36:02 +0800 https://ruby-china.org/topics/10138 https://ruby-china.org/topics/10138 <p>学习 Learn Ruby The Hard Way 的时候看到这样一段代码：</p> <pre class="highlight ruby"><code><span class="n">prompt</span><span class="p">;</span> <span class="n">next_move</span> <span class="o">=</span> <span class="nb">gets</span><span class="p">.</span><span class="nf">chomp</span> <span class="k">if</span> <span class="n">next_move</span><span class="p">.</span><span class="nf">include?</span> <span class="s2">"0"</span> <span class="ow">or</span> <span class="n">next_move</span><span class="p">.</span><span class="nf">include?</span> <span class="s2">"1"</span> <span class="n">how_much</span> <span class="o">=</span> <span class="n">next_move</span><span class="p">.</span><span class="nf">to_i</span><span class="p">()</span> <span class="k">else</span> <span class="n">dead</span><span class="p">(</span><span class="s2">"Man, learn to type a number."</span><span class="p">)</span> <span class="n">endm</span> </code></pre> <p>next_move.include? "0" or next_move.include? "1" 这个式子怎么用更简单的方式来代替呢？要能直接判断字符串中包含数字</p> hgq114 Thu, 21 Feb 2013 15:45:08 +0800 https://ruby-china.org/topics/8826 https://ruby-china.org/topics/8826