how to definition a non-const pointer that point a const var.

[Jonathan M Davis]

On Friday, August 23, 2019 10:14:56 PM MDT lili via Digitalmars-d-learn 
wrote:
> Hi:
>    In C we can definition const int *ncp_to_cv;
>     or int * const cp_to_ncv;
>    How to do this in D.

D uses parens to restrict how much of the type is const.

const int* - const pointer to const int
const(int*) - const pointer to const int
const(int)* - mutable pointer to const int

Similarly,

const(int*)* - mutable pointer to const pointer to const int
const(int)** - mutable pointer to mutable pointer to const int

D's const is transitive, so it's not possible to have a const pointer to a
mutable type.

- Jonathan M Davis