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Update chapter_3_16_4.md

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2023-05-18 09:54:02 +08:00
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@@ -45,6 +45,7 @@ fn main() {
} }
``` ```
代码运行结果如下： 代码运行结果如下：
![注释](../../assets/25.png) ![注释](../../assets/25.png)
第一个“Dog leave”打印是第14行调用释放_a产生，最后一个“Dog leave”打印则是_b离开作用域时调用drop方法产生。 第一个“Dog leave”打印是第14行调用释放_a产生，最后一个“Dog leave”打印则是_b离开作用域时调用drop方法产生。