I'm starting to use D out of curiousity. I've used both Eclipse + DDT and Visual Studio + visualD and both give the same error in my second test program (second to Hello World of course...) using the Transmogrifier/CardboardBox example from TDPL :

 Error 42: Symbol Undefined _D1a14Transmogrifier12transmogrifyMFZv (void a.Transmogrifier.transmogrify())

Am I not linking module a (containing Transmogrifier and CardboardBox)? How can I get either or both IDE's running my test program?

On Thursday, 30 January 2014 at 21:28:08 UTC, Martijn Pot wrote:
>  Error 42: Symbol Undefined _D1a14Transmogrifier12transmogrifyMFZv (void a.Transmogrifier.transmogrify())

Typically that means the function isn't implemented, e.g. this:

void transmogrify();

instead of this:

void transmogrify() { }

The NVI examples in TDPL don't really work, as private functions in D are currently not virtual.

You could try pasting example code of what you're trying to build to show you exactly what goes wrong.

On 01/30/2014 01:28 PM, Martijn Pot wrote:
> I'm starting to use D out of curiousity. I've used both Eclipse + DDT
> and Visual Studio + visualD and both give the same error in my second
> test program (second to Hello World of course...) using the
> Transmogrifier/CardboardBox example from TDPL :
>
>   Error 42: Symbol Undefined _D1a14Transmogrifier12transmogrifyMFZv
> (void a.Transmogrifier.transmogrify())
>
> Am I not linking module a (containing Transmogrifier and CardboardBox)?
> How can I get either or both IDE's running my test program?

You must include a.d on the build line.

  dmd a.d main.d ...

Ali

On Thursday, 30 January 2014 at 21:33:05 UTC, Andrej Mitrovic wrote:
> On Thursday, 30 January 2014 at 21:28:08 UTC, Martijn Pot wrote:
>> Error 42: Symbol Undefined _D1a14Transmogrifier12transmogrifyMFZv (void a.Transmogrifier.transmogrify())
>
> Typically that means the function isn't implemented, e.g. this:
>
> void transmogrify();
>
> instead of this:
>
> void transmogrify() { }
>
> The NVI examples in TDPL don't really work, as private functions in D are currently not virtual.

Indeed, making them public solved the problem. Is there more stuff in the book that isn't working?

>
> You could try pasting example code of what you're trying to build to show you exactly what goes wrong.

On 1/30/14, Martijn Pot <martijnpot52@gmail.com> wrote:
> Indeed, making them public solved the problem. Is there more stuff in the book that isn't working?

Check the errata page[1], which coincidentally seems to be down. I'll CC Andrei.

[1]: http://erdani.com/tdpl/errata/index.php?title=Main_Page

Another more-recent book (and a free one) is this:
http://ddili.org/ders/d.en/index.html

On 1/30/14, Andrej Mitrovic <andrej.mitrovich@gmail.com> wrote:
> On 1/30/14, Martijn Pot <martijnpot52@gmail.com> wrote:
>> Indeed, making them public solved the problem. Is there more stuff in the book that isn't working?
>
> Check the errata page[1], which coincidentally seems to be down. I'll CC Andrei.
>
> [1]: http://erdani.com/tdpl/errata/index.php?title=Main_Page
>
> Another more-recent book (and a free one) is this:
> http://ddili.org/ders/d.en/index.html

I CC'ed the wrong address, re-sending.