The following doesn't link:

struct A {}
void main() {
        int [A] w;
        A a;
        w[a]=8;
}

Outputs: Error 42: Symbol Undefined __init_14TypeInfo_S1x1A.

-------------------------
Carlos Santander


---

Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.528 / Virus Database: 324 - Release Date: 2003-10-16

"Carlos Santander B." <carlos8294@msn.com> wrote in message news:bn182h$qup$1@digitaldaemon.com...
> The following doesn't link:
>
> struct A {}
> void main() {
>         int [A] w;
>         A a;
>         w[a]=8;
> }
>
> Outputs: Error 42: Symbol Undefined __init_14TypeInfo_S1x1A.

Yes. It needs a typeinfo class for it to work. Unfortunately, I haven't figured out a way for this to work for user defined types. To make it work for now, you'll need to write one, see the ti_*.d files in phobos for reference. They're pretty simple.

"Walter" <walter@digitalmars.com> wrote in message
news:bn5ee6$2cfd$1@digitaldaemon.com...
|
| Yes. It needs a typeinfo class for it to work. Unfortunately, I haven't
| figured out a way for this to work for user defined types. To make it work
| for now, you'll need to write one, see the ti_*.d files in phobos for
| reference. They're pretty simple.
|
|

But the same works if A is a class instead of a struct.

————————————————————————— Carlos Santander


---

Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.528 / Virus Database: 324 - Release Date: 2003-10-16

What is the difference between a TypeInfo and a ClassInfo?

Sean

"Walter" <walter@digitalmars.com> wrote in message news:bn5ee6$2cfd$1@digitaldaemon.com...
>
> "Carlos Santander B." <carlos8294@msn.com> wrote in message news:bn182h$qup$1@digitaldaemon.com...
> > The following doesn't link:
> >
> > struct A {}
> > void main() {
> >         int [A] w;
> >         A a;
> >         w[a]=8;
> > }
> >
> > Outputs: Error 42: Symbol Undefined __init_14TypeInfo_S1x1A.
>
> Yes. It needs a typeinfo class for it to work. Unfortunately, I haven't figured out a way for this to work for user defined types. To make it work for now, you'll need to write one, see the ti_*.d files in phobos for reference. They're pretty simple.

"Carlos Santander B." <carlos8294@msn.com> wrote in message news:bn65s2$9re$1@digitaldaemon.com...
> "Walter" <walter@digitalmars.com> wrote in message
> news:bn5ee6$2cfd$1@digitaldaemon.com...
> |
> | Yes. It needs a typeinfo class for it to work. Unfortunately, I haven't
> | figured out a way for this to work for user defined types. To make it
work
> | for now, you'll need to write one, see the ti_*.d files in phobos for
> | reference. They're pretty simple.
> |
> |
>
> But the same works if A is a class instead of a struct.

Right. That's because a class has the several predefined virtual functions needed.

"Sean L. Palmer" <palmer.sean@verizon.net> wrote in message news:bn6cdp$imr$1@digitaldaemon.com...
> What is the difference between a TypeInfo and a ClassInfo?

TypeInfo gives information on any type, ClassInfo just for classes.

This seems like an implementation detail that has leaked out.

Sean

"Walter" <walter@digitalmars.com> wrote in message news:bva2mu$3198$2@digitaldaemon.com...
>
> "Sean L. Palmer" <palmer.sean@verizon.net> wrote in message news:bn6cdp$imr$1@digitaldaemon.com...
> > What is the difference between a TypeInfo and a ClassInfo?
>
> TypeInfo gives information on any type, ClassInfo just for classes.