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<span id="id1"></span><h1>SDIFF<a class="headerlink" href="#sdiff" title="Permalink to this headline">¶</a></h1>
<p><strong>SDIFF key [key ...]</strong></p>
<p>返回一个集合的全部成员，该集合是所有给定集合之间的差集。</p>
<p>不存在的 <code class="docutils literal"><span class="pre">key</span></code> 被视为空集。</p>
<dl class="docutils">
<dt><strong>可用版本：</strong></dt>
<dd>>= 1.0.0</dd>
<dt><strong>时间复杂度:</strong></dt>
<dd>O(N)， <code class="docutils literal"><span class="pre">N</span></code> 是所有给定集合的成员数量之和。</dd>
<dt><strong>返回值:</strong></dt>
<dd>一个包含差集成员的列表。</dd>
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<div class="highlight-python"><div class="highlight"><pre>redis> SMEMBERS peter's_movies
1) "bet man"
2) "start war"
3) "2012"
redis> SMEMBERS joe's_movies
1) "hi, lady"
2) "Fast Five"
3) "2012"
redis> SDIFF peter's_movies joe's_movies
1) "bet man"
2) "start war"
</pre></div>
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