August 2021
Intermediate to advanced
450 pages
9h 36m
Chinese
Content preview from C++程序设计：原理与实践（基础篇）（原书第2版）
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12.5.1 生成的析构函数
如果一个类的成员拥有一个析构函数，则在包含这个成员的对象销毁时这个析构函数会被调用。例如：
当我们退出函数some_fct（）时，fred将会离开其作用域，因此fred会被销毁；也就是说，name和addresses的析构函数会被调用。显然，只有这样析构函数才是有用的，它有时被表达为“编译器为Customer生成一个析构函数，它调用成员的析构函数”。这种通常的实现方式正是析构函数调用应提供的显然且必要的保证。
成员和基类的析构函数被派生类的析构函数（无论是用户定义的或是编译器生成的）隐式调用。基本上，所有规则可总结为一句话：“当对象被销毁时，析构函数被调用（离开作用域、被delete释放等情况下）。”
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.