C++ reference is implemented as a pointer internally.

最新推荐文章于 2026-01-01 10:09:43 发布

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#reference #c++ #object

本文探讨了C++中引用和指针的实现方式及其逻辑视图。从内部实现来看，引用通常被实现为指针，但在逻辑上，引用被视为内存块的新名称。这使得一个变量可以拥有多个名称。通过实现的角度观察，实际上只有一个真正的名称，其他的都是间接指向该名称的指针。

Internally, a reference is generally implemented as pointer and the object syntax transformed into the indirection required of a pointer. [ P23, Inside the C++ object model]

But, logically, we can still take a reference as a new name to a block of memory. That means a variable can has more than one names. Through the view of the implementation, there is only one real name and the others are all indirected pointer.