• Alexander Zhirov (25/25) Nov 15 2022 Is there any way to get the name of class B?
• Hipreme (3/28) Nov 15 2022 You can do it as `val.classinfo.name`
• Alexander Zhirov (8/9) Nov 15 2022 Yes, I have already done so, but the result is the same, actually
• Imperatorn (37/39) Nov 15 2022 As shown you can use Object for this.
• Alexander Zhirov (4/6) Nov 15 2022 My knowledge of D is still modest, most likely, I just didn't
• bauss (28/53) Nov 15 2022 If you cast to Object and use classinfo.name then you get the
• Alexander Zhirov (2/4) Nov 15 2022 Thanks! 😌

Alexander Zhirov <azhirov1991 gmail.com> writes:

Is there any way to get the name of class B?

```d
interface A {
     string text();
}

class B : A {
     override string text() {
         return ": It's ok!";
     }
}

void main() {
     A[] a = cast(A[]) new B[3];
     B b = new B();
     fill(a, b);
     foreach (val ; a) {
         writeln(typeof(val).stringof, val.text());
     }
}
```

Output:

```sh
A: It's ok!
A: It's ok!
A: It's ok!
```

Hipreme <msnmancini hotmail.com> writes:

On Tuesday, 15 November 2022 at 11:42:59 UTC, Alexander Zhirov 
wrote:
 Is there any way to get the name of class B?

 ```d
 interface A {
     string text();
 }

 class B : A {
     override string text() {
         return ": It's ok!";
     }
 }

 void main() {
     A[] a = cast(A[]) new B[3];
     B b = new B();
     fill(a, b);
     foreach (val ; a) {
         writeln(typeof(val).stringof, val.text());
     }
 }
 ```

 Output:

 ```sh
 A: It's ok!
 A: It's ok!
 A: It's ok!
 ```

You can do it as `val.classinfo.name`

Alexander Zhirov <azhirov1991 gmail.com> writes:

On Tuesday, 15 November 2022 at 12:25:22 UTC, Hipreme wrote:
 You can do it as `val.classinfo.name`

Yes, I have already done so, but the result is the same, actually 
:)

```d
app.A: It's ok!
app.A: It's ok!
app.A: It's ok!
```

Imperatorn <johan_forsberg_86 hotmail.com> writes:

On Tuesday, 15 November 2022 at 12:25:22 UTC, Hipreme wrote:
 On Tuesday, 15 November 2022 at 11:42:59 UTC, Alexander Zhirov 
 wrote:

As shown you can use Object for this.

Side-note, you don't override interface members, you implement 
them.

```d
         interface A
         {
             string text();
         }

         class B : A
         {
             string text()
             {
                 return ": To B or not to B!";
             }
         }

         class C : A
         {
             string text()
             {
                 return ": Oh I C!";
             }
         }

         void main()
         {
             Object[] a = new B[3];
             B b = new B();
             C c = new C();

             fill(a, b);

             //Just to show
             a[0] = c;

             foreach (val; a)
             {
                 writeln(typeof(val).stringof, val.text());
             }
         }
```

Alexander Zhirov <azhirov1991 gmail.com> writes:

On Tuesday, 15 November 2022 at 14:26:22 UTC, Imperatorn wrote:
 Side-note, you don't override interface members, you implement 
 them.

My knowledge of D is still modest, most likely, I just didn't 
know that override with interfaces can not be used. Thanks for 
the hint!

bauss <jacobbauss gmail.com> writes:

On Tuesday, 15 November 2022 at 11:42:59 UTC, Alexander Zhirov 
wrote:
 Is there any way to get the name of class B?

 ```d
 interface A {
     string text();
 }

 class B : A {
     override string text() {
         return ": It's ok!";
     }
 }

 void main() {
     A[] a = cast(A[]) new B[3];
     B b = new B();
     fill(a, b);
     foreach (val ; a) {
         writeln(typeof(val).stringof, val.text());
     }
 }
 ```

 Output:

 ```sh
 A: It's ok!
 A: It's ok!
 A: It's ok!
 ```

If you cast to Object and use classinfo.name then you get the 
expected result of B.

```d
interface A {
     string text();
}

class B : A {
     override string text() {
         return ": It's ok!";
     }
}

void main() {
     A[] a = cast(A[]) new B[3];
     B b = new B();
     fill(a, b);
     foreach (val ; a) {
         writeln((cast(Object)val).classinfo.name, val.text()); // 
Here is the magic.
     }
```
Output:

```
onlineapp.B: It's ok!
onlineapp.B: It's ok!
onlineapp.B: It's ok!
```

Alexander Zhirov <azhirov1991 gmail.com> writes:

On Tuesday, 15 November 2022 at 14:09:01 UTC, bauss wrote:
 If you cast to Object and use classinfo.name then you get the 
 expected result of B.

Thanks! 😌