Parentheses and unpacking variadic template parameters [duplicate]

Question

For example, is

(const int)* someInt;

valid code?

If so, is that statement different than

const int* someInt;

?

Answer 1

You can put arbitrarily many parentheses around expressions without changing the meaning. But you cannot do the same with types. In particular, as the others have pointed out, the parenthese in your code change the meaning from a declaration to a cast.