What are the limitations of const references in C++?

What are the limitations of const references in C++?

Const references in C++ prevent modification of the referenced object, but they can't bind to temporary objects in certain contexts.

Can you give an example of when a const reference would not work?

Sure! If you try to bind a const reference to a temporary object returned by a function, it may lead to issues if the object goes out of scope.

Are there any performance benefits to using const references?

Yes, using const references can improve performance by avoiding unnecessary copies of large objects, especially in function parameters.

What about const pointers? Are they similar?

Const pointers are different; they point to a constant value but can change what they point to. Const references, however, cannot be reassigned.

How do const references interact with move semantics?

Const references can bind to rvalues, but they won't allow modifications, which can limit their use in move semantics.