c++ - 有没有const右值引用？

Question

我只见过这种形式：

int&&a=3；

那么有没有const int&&a=3这种形式呢？为什么

Answer 1

There is this type of left and right value references for the completeness of semantics, but rvalues ​​are used to match the movement semantics. Think about the literal values ​​or checkpoint values ​​included in rvalues, constant rvalue references are of no use. Refer to the in-depth understanding of C++11 3.3.3

Answer 2

Where does the move semantics of constant rvalue appear? Find out this usage scenario