[fpc-pascal] Feature announcement: implicit generic function specializations

[Mattias Gaertner]

On Thu, 21 Apr 2022 10:00:46 +0200 (CEST)
Michael Van Canneyt via fpc-pascal <fpc-pascal at lists.freepascal.org>
wrote:

> On Thu, 21 Apr 2022, Hairy Pixels via fpc-pascal wrote:
> 
> >
> >  
> >> On Apr 21, 2022, at 3:48 AM, Mattias Gaertner via fpc-pascal
> >> <fpc-pascal at lists.freepascal.org> wrote: 
> >>> Writeln(Apply(@StrFunc, 'Foobar')); // will write FOOBAR
> >>> Writeln(Apply(@NegFunc, 42)); // will write -42
> >>> end.  
> >> 
> >> Mind boggling. :)  
> >
> > This was actually your idea if I remember correctly. :) I think you
> > said even Delphi doesn’t do this so I challenged myself to get it
> > done.  
> 
> Delphi does it, but only for methods of a class.
> 
> AFAIK delphi does not support generic "plain" functions.

Delphi has generic methods and still no generic "plain" functions.

Delphi 11 still does not support *nested* implicit specializations. 
For example the Apply with methods gives in Delphi:

E2010 Incompatible types 'T' and 'String'
F2084 Internal Error: AV10D0B8D2(10CB0000)-R800000000-0

Mattias