way to test an empty class

[tinnitus]

Hello,

i wonder to know wich way can i use to test if an object contained by another exist or not

Best regards

Tinnitus

[SAMUEL_NIF]

Hi,

What do you mean by exist or not?

What do you want to do?

Could you give us more details about your question?

Regards, Samuel G.

[tinnitus]

Hello,

I mean for example if  i have a car class including  or not (optional) a radio set 

I thought that creating the car object not involve creating the radio but i tested  it is false

a default radio is present.  So an object for what i tested is never null .

How to manage optionals objects into others ?  example of car with options : radio set, gps, air bag, tv ...

may be the create by ref is needed in this case ?  or maybe creating child class of options with the default class , no radio, no gps, no air bag ...  ?

Best regards

Tinnitus

[SAMUEL_NIF]

You can create a Boolean in your option (radio set, gps, air bag, tv). When the car is created, the Boolean are instantiate. Then you could create a method to check is the Boolean ok or not.

Regards Samuel G.