Difference between FPC Generics and Delphi Generics?

[Brainer]

Btw, is it possible to use Type Parameter bounds, like java has? It means that you can enforce that your type-parameter T must be a derivative of a specific class, like this:

A text worth mentioning: http://sjrd.ftp-developpez.com/tutor...i-generics.pdf.

Answering your question: yes, it is. As you will see in the article, there is few methods to do so. A little extract from the article, which I put below, provides you with an answer:

type
TStreamGenericType<T: TStream> = class
end;

[chronozphere]

Ah thanks. I'll read that!

And how about FPC? Does it have this feature too?

[JSoftware]

Looks like Paul Ishenin is updating Delphi mode generics in FPC heavily those days, so it might be safe to just use the Delphi generics style for now

[chronozphere]

Thanks for the heads up mate! That makes my life a whole lot easier.

[wagenheimer]

I'm having some trouble converting my Delphi generics to FPC.

FManaButtons: {$ifdef FPC}specialize{$endif} TObjectList<TManaButton>;

Error: Specialization is only supported for generic types

This not works in FPC?

[wagenheimer]

Records Types with Procedures also does not works? =(

[JSoftware]

I'm having some trouble converting my Delphi generics to FPC.

FManaButtons: {$ifdef FPC}specialize{$endif} TObjectList<TManaButton>;

Error: Specialization is only supported for generic types

This not works in FPC?

The TObjectList in fpc isn't generic

[JSoftware]

Records Types with Procedures also does not works? =(

Upgrade to FPC in trunk and use Delphi mode. It's partially supported there. It just got implemented less than a month ago, and I'm not sure it's stable, but I haven't had any problems with it during my quick tests

The same goes for Delphi style generics. The current trunk version in delphi mode can do inline specialization just like delphi. But again, this is very, very new stuff

[chronozphere]

The same goes for Delphi style generics. The current trunk version in delphi mode can do inline specialization just like delphi. But again, this is very, very new stuff

Awesome Awesome!! Hope these new features will become "stable" soon.

[chronozphere]

Ok, seems like they implemented it:

http://wiki.lazarus.freepascal.org/F...Features_Trunk

I'd like to test it, but I don't know what to download. Is this only available through the development trunk? Are there any automatic builds (FPC + Laz) containing these changes?

Thanks

Edit: I have downloaded and installed the latest version, which I found at this page:
http://www.hu.freepascal.org/lazarus/
But it doesn't work yet. Do these packages also contain the latest FPC builds?