Re: [Vala] instantiation via base class constructor

[Maciej Piechotka <uzytkownik2 gmail com>]

Andre Kuehne <andre kuehne gmx net> writes:

> Hello,
>
> i am new to Vala, played with it the last two days and have now a bunch of open questions.
> Here's one of them: Is it possible to instantiate a class via a
> constructor of one of its base classes? For example the following does
> not work:
>
> class Aaa {
>       public int x;
>       Aaa(int x) { this.x = x; }
>       public virtual void test() { stdout.printf("%d\n", this.x); }
> }
>
> class Bbb : Aaa {
>       public override void test() { stdout.printf("%d\n", -this.x); }
> }

The default constructor is used. Please note that the x will be not assigned.

> void main() {
>       new Bbb(5).test();

new Bbb(5).test();

> }
>
> $ valac super.vala
> super.vala:13.2-13.11: error: Too many arguments, method `Bbb.new' does not take 1 arguments
>         new Bbb(5).test();
>         ^^^^^^^^^^
> Compilation failed: 1 error(s), 0 warning(s)
>
> Thanks in advance!
> Andre


Regards
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