Re: Is it possible to store different subclasses in one array?
On Monday, 13 April 2020 at 05:54:52 UTC, evilrat wrote: if (auto weapon = cast(Weapon) gi) weapon.Attack(); Does the parlor (currently illegal in Dlang) if (Weapon w := gi) w.Attack(); look nicer or even (currently legal): if (Weapon w ._= gi) w.Attack();
Re: Is it possible to store different subclasses in one array?
On Monday, 13 April 2020 at 05:54:52 UTC, evilrat wrote:
On Monday, 13 April 2020 at 04:21:48 UTC, Leonardo wrote:
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()
can be simplified as:
if (auto weapon = cast(Weapon) gi)
weapon.Attack();
Even better. Thanks folks!
Re: Is it possible to store different subclasses in one array?
On Monday, 13 April 2020 at 04:21:48 UTC, Leonardo wrote:
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()
can be simplified as:
if (auto weapon = cast(Weapon) gi)
weapon.Attack();
Re: Is it possible to store different subclasses in one array?
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()
Re: Is it possible to store different subclasses in one array?
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?
Re: Is it possible to store different subclasses in one array?
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?
Is it possible to store different subclasses in one array?
Is it possible to store different subclasses in one array?
In C#, we have this example, but how I do that in D?
public class BaseItem{
public string name = "";
}
public class Weapon : BaseItem{
public int damage = 10;
}
public class Potion : BaseItem{
public int hpRestore = 50;
}
var GameItems = new List();
GameItems.Add(new Weapon());
GameItems.Add(new Potion());
