擅长:python、mysql、java
<p>在<a href="https://rads.stackoverflow.com/amzn/click/com/0201633612" rel="noreferrer">GOF</a>开始时,它们声明</p>
<blockquote>
<p>Favor object composition over class inheritance.</p>
</blockquote>
<p>这将进一步讨论<a href="http://www.artima.com/lejava/articles/designprinciples4.html" rel="noreferrer">here</a></p>