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## 25.`Obj-c`对象、类的本质是通过什么数据结构实现的? | ||
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结构体。 | ||
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譬如一个最常见的 `Nsobject` 对象。将其编译为 `C++` 代码后,实际上就是一个 `Nsobject_Impl` 结构体。 |