Drive a class as array

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Suppose I have a base class named Base and there is a function in Base named Reset, I am going to define array of Base class but every time I want to reset all array items I have to iterate all elements Reset function.

My question is : Is there a way I derive the Base class as Child class which consists of array of Base and create a ResetAll function in Child to iterate all Reset functions of the array?

Or maybe create a ResetAll function which will trigger all Reset functions?

What I have tried:

It's just concept question so practically i just created the class and array but couldn't manage to derive a child which is array of base and is able to reset all items.

Posted 20-Jul-18 17:57pm

Member 13920413

Updated 20-Jul-18 23:41pm

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OriginalGriff · Accepted Answer · 2018-07-20T19:54:00

No. C does not support classes at all, so there is no way to create a Base class in the first place.

If you are talking about C++ or C# instead (and if you are, then tagging your question appropriately helps a lot) then yes, you can.

One way I do things is to have the Base class contain a static collection of it's instances (C# code here):

public class Base
    {
    private static List<Base> all = new List<Base>();
    private Base()
        {
        all.Add(this);
        }
    public static Base Create()
        {
        return new Base();
        }
    public static Base[] GetAll()
        {
        return all.ToArray();
        }
    }

It would be easy to add the Reset and ResetAll methods to that:

public virtual void Reset()
    {
    ...
    }
public static void ResetAll()
    {
    foreach (Base b in all)
        {
        b.Reset();
        }
    }

You can do similar things in C++.