• John Chapman (15/15) Feb 17 2023 If I call opDispatch with a name that is also a type inside a
• drug007 (3/22) Feb 17 2023 you are trying to assign a value `Suit.diamonds` to a type `Suit`. Could...
• drug007 (18/19) Feb 17 2023 [snipped]
• drug007 (4/6) Feb 17 2023 [snipped]
• John Chapman (5/7) Feb 17 2023 I'm trying to assign Suit.diamonds to a property of Card named
• drug007 (2/10) Feb 18 2023 My bad, sorry for noise
• Paul Backus (4/7) Feb 17 2023 I think this is the same bug reported here:
• John Chapman (2/4) Feb 17 2023 Thanks for appending this to the bug report.

John Chapman <johnch_atms hotmail.com> writes:

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.

drug007 <drug2004 bk.ru> writes:

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?

drug007 <drug2004 bk.ru> writes:

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;
}
```

drug007 <drug2004 bk.ru> writes:

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.

John Chapman <johnch_atms hotmail.com> writes:

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.

drug007 <drug2004 bk.ru> writes:

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

Paul Backus <snarwin gmail.com> writes:

On Friday, 17 February 2023 at 19:30:02 UTC, John Chapman wrote:
 If I call opDispatch with a name that is also a type inside a

[...]
 Is this a bug? It compiles without error if I call 
 opDispatch!"Suit" directly.

I think this is the same bug reported here: 
https://issues.dlang.org/show_bug.cgi?id=18866

John Chapman <johnch_atms hotmail.com> writes:

On Friday, 17 February 2023 at 20:56:57 UTC, Paul Backus wrote:
 I think this is the same bug reported here: 
 https://issues.dlang.org/show_bug.cgi?id=18866

Thanks for appending this to the bug report.