17.02.2023 22:30, John Chapman пишет:
> If I call opDispatch with a name that is also a type inside a ```with``` statement, I get an error.
> 
> ```d
> enum Suit { clubs, spades, hearts, diamonds }
> 
> struct Card {
>    void opDispatch(string s)(.Suit) {}
> }
> 
> void main() {
>    Card c;
>    with (c) Suit = .Suit.diamonds; // Error: `Suit` is not an lvalue and cannot be modified
> }
> ```
> 
> Is this a bug? It compiles without error if I call opDispatch!"Suit" directly.

you are trying to assign a value `Suit.diamonds` to a type `Suit`. Could you describe what you want to do?

17.02.2023 23:55, drug007 пишет:
> 17.02.2023 22:30, John Chapman пишет:
[snipped]

 Probably you meant something like this:
```D
import std;

enum Suit { clubs, spades, hearts, diamonds }

struct Card {
   void opDispatch(string s)(Suit t)
   {
       pragma(msg, s); // compile time output - suit
       writeln(t);     // runtime output      - diamonds
   }
}

void main() {
   Card c;
   with (c) suit = .Suit.diamonds;
}
```

18.02.2023 00:06, drug007 пишет:
> 17.02.2023 23:55, drug007 пишет:
>> 17.02.2023 22:30, John Chapman пишет:

[snipped]

I think in you initial example the compiler does not call `opDispatch` at all because it recognizes `Suit` as a type.

On Friday, 17 February 2023 at 20:55:03 UTC, drug007 wrote:
> you are trying to assign a value `Suit.diamonds` to a type `Suit`. Could you describe what you want to do?

I'm trying to assign Suit.diamonds to a property of Card named "Suit". I know properties are usually lower case, and that calling "c.Suit = Suit.diamonds" works. Just wonder why the compiler seems to overlook opDispatch here.

18.02.2023 00:44, John Chapman пишет:
> On Friday, 17 February 2023 at 20:55:03 UTC, drug007 wrote:
>> you are trying to assign a value `Suit.diamonds` to a type `Suit`. Could you describe what you want to do?
> 
> I'm trying to assign Suit.diamonds to a property of Card named "Suit". I know properties are usually lower case, and that calling "c.Suit = Suit.diamonds" works. Just wonder why the compiler seems to overlook opDispatch here.

My bad, sorry for noise