引用可能比指针更有效吗? [英] May a reference be more efficient than a pointer?

问题描述

我想知道有时(取决于平台或编译器或代码中的上下文等)引用是否比指针更有效?

I'm wondering whether sometimes (depends on the platform or compiler or context in code etc) a reference can be more efficient than a pointer?

推荐答案

引用比指针更有效吗?

May a reference be more efficient than a pointer?

不！不必要.标准也没有这么说.

Nopes! Not necessarily. The Standard doesn't say that either.

大多数编译器通过使用指针来实现引用机制.向 C++ 添加了引用是为了支持运算符重载，而不是为了提高效率.

Most compilers implement reference mechanism via use of pointers. References were added to C++ to support operator overloading and not for efficiency.

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