Re: why local variables cannot be ref?

[Fanda Vacek via Digitalmars-d-learn]

On Monday, 25 November 2019 at 05:51:31 UTC, Rumbu wrote:
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;

Thanks for answer, I'm coming from C++. But anyway, pointers are 
not allowed in @safe code, so this is not always solution. 
Workaround exits even for @safe code, so my question remains the 
same. What is a rationale for such a language design restriction, 
if it can be workarounded easily.