why local variables cannot be ref?
Rumbu
rumbu at rumbu.ro
Mon Nov 25 05:51:31 UTC 2019
On Monday, 25 November 2019 at 03:07:08 UTC, Fanda Vacek wrote:
> Maybe I'm missing the thing, but I'm not able to declare local
> ref variable even if simple workaround exists. Is this
> preferred design pattern?
>
> ```
> int main()
> {
> int a = 1;
> //ref int b = a; // Error: variable `tst_ref.main.b` only
> parameters or `foreach` declarations can be `ref`
> ref int b() { return a; }
> b = 2;
> assert(a == 2);
> return 0;
> }
> ```
>
> Fanda
Probably you are coming from C#. There are no reference variables
in D, but you can use pointers like in:
int* b = &a;
*b = 2;
More information about the Digitalmars-d-learn
mailing list