Re: [Vala] Problem with programmatic generic object instantiation

[Daniel Espinosa <esodan gmail com>]

Take in account that Type system is dynamically created, then a type number
will change with each execution.

Use

YourCreatedObject is typeof (Object)

to check if the created object is of type you need, like a derived object.

You can use

obj.get_type().is_a(typeof (Object))

And consider that your example is exactly the way to create an object of
Generic class, because you have set tje object type. Create a generic
instance with Object.new you should provide the object type.
El feb. 16, 2016 5:14 AM, "Andy Lees" <andrewl oz gmail com> escribió:

> Hi,
>
> I have a generic array implementation like so:
>
> public class GArrSerializable<T> : Serializable, Object  {
>   public T[] data;
>   public int length;
>   public GArrSerializable(int size = 0) {
>     data = new T[size];
>   }
>
>   public Type type () { return typeof (T); }
>
> ...etc
>
> and a derived type:
>
> public class IntArr : GArrSerializable<int> {
>
>   public IntArr(int size = 0) {
>     base (size);
>   }
> }
>
> If I create an instance of the type, then instance.type () returns 24 as
> expected.
> If I create an instance like so:
> var ia = Object  new (type) as IntArr;
> var t = ia.type ();
>
> Then t is 4 rather than 24.  As it is in the instance when it tries to
> deserialize.
>
> Can you tell me why this is so, and how I can programmatically create
> objects derived from a parameterised type?
>
> Thanks
>
> Andrew Lees
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