Is it possible to store different subclasses in one array?

[Leonardo]

On Monday, 13 April 2020 at 04:15:04 UTC, Leonardo wrote:
> On Monday, 13 April 2020 at 01:47:11 UTC, Adam D. Ruppe wrote:
>> On Monday, 13 April 2020 at 01:42:51 UTC, Leonardo wrote:
>>> Is it possible to store different subclasses in one array?
>>> In C#, we have this example, but how I do that in D?
>>
>> Did you try
>>
>> BaseItem[] GameItems;
>> GameItems ~= new Weapon();
>>
>>
>> yet?
>
> Oh, thanks, this works. Now it seems obvious.
> But fitting another question, this case is only representative, 
> if I want to use one method present in only one of these 
> classes like this:
>
>  foreach (ref gi; GameItems)
> {
>     if (gi == Weapon)
>         gi.Attack()
> }
>
> How would it be?

Replying myself...

weapon = cast(Weapon) gi;
if (weapon !is null)
     weapon.Attack()