[fpc-pascal] Feature announcement: implicit generic function specializations
nc-gaertnma at netcologne.de
Thu Apr 21 10:47:44 CEST 2022
On Thu, 21 Apr 2022 10:00:46 +0200 (CEST)
Michael Van Canneyt via fpc-pascal <fpc-pascal at lists.freepascal.org>
> 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
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