Array of derived class objects?
simendsjo
simendsjo at gmail.com
Tue Mar 6 11:36:47 PST 2012
On Tue, 06 Mar 2012 20:27:56 +0100, H. S. Teoh <hsteoh at quickfur.ath.cx>
wrote:
> Code:
>
> // test.d
> class A {}
> class B : A {}
> class C : A {}
> void main() {
> A[] objs = [ new B, new C ]; // line 6
> }
>
> Compiler error:
>
> test.d(6): Error: cannot implicitly convert expression (new B) of type
> test.A to test.C
> test.d(6): Error: cannot implicitly convert expression ([(__error),new
> C]) of type C[] to A[]
>
> I thought D was supposed to automatically infer the most derived common
> base class to assign to an array literal of different types? At least,
> that's the impression I got from TDPL.
>
> What am I doing wrong?
>
>
> T
>
I have no idea (and haven't read TDPL), but adding a new A somewhere in
the array makes it work. Compiler bug..?
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