In C ++, does it make sense to say that a variable is of type rvalue reference?

Question

What I'm thinking of something like X&& x = static_cast<X&&>(obj_x);is that, despite the appearance, xends up being a normal reference to lvalue. I recently met this article where Scott Meyers insists that there xwill be lvalue links like rvalue. Is it really significant, or is this difference without a difference? In particular, given either

X&& x = static_cast<X&&>(obj_x)

or

X& x = obj_x;

Is there any subsequent code that will behave differently for these two definitions x?

Answer 1

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