update 03/07
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<div class="book" data-level="2.13" data-basepath=".." data-revision="1402267410054">
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<div class="book" data-level="2.13" data-basepath=".." data-revision="1402287112409">
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<div class="book-header">
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<!-- Actions Left -->
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<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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@ -587,7 +587,7 @@
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<div class="page-inner">
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<section class="normal" id="section-gitbook_7">
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<section class="normal" id="section-gitbook_39">
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<h1 id="-">继承</h1>
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<p>一个类可以继承另一个类的方法,属性和其它特性。当一个类继承其它类,继承类叫子类,被继承类叫超类(或父类)。在Swift中,继承是区分「类」与其它类型的一个基本特征。</p>
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