https://ruby-china.org/shixukai en-us <pre class="highlight ruby"><code><span class="n">str</span> <span class="o">=</span> <span class="s2">" shssskkkk "</span> <span class="n">r1</span> <span class="o">=</span> <span class="sr">%r|([^</span><span class="se">\s</span><span class="sr">]*)|</span> <span class="n">r1</span> <span class="o">=~</span> <span class="n">str</span> <span class="vg">$1</span> </code></pre> <p>这样得出的结果为什么是空而不是"shssskkkk "？ 如果表达式是</p> <pre class="highlight ruby"><code><span class="n">r1</span> <span class="o">=</span> <span class="sr">%r|([^</span><span class="se">\s</span><span class="sr">])|</span> </code></pre> <p>这样的话结果是“s” 我想根据贪婪匹配的原则加“*”应该是后面全部匹配才对。</p> shixukai Fri, 10 Jul 2015 13:40:49 +0800 https://ruby-china.org/topics/26424 https://ruby-china.org/topics/26424