Mailing lists / fpc-devel

fpc-devel · 2025-07

1. generic forward declaration?

   Are there? Or is there something else? The below compiles. No duplicate TBar. Looks like a forward declaration... program Project1;{$Mode objfpc} type   generic…

   MMMMartin Frb, Mattias Gaertner, Michael Van Canneyt7-30-2025 11:34 UTC
   7
2. generic constraints...

   Currently you can't do type   generic TFoo<A> = class      procedure Bar; virtual;   end;   generic FooChild<F: TFoo> = class(F)      procedure Bar; override;…

   MMMMartin Frb, Mattias Gaertner, Michael Van Canneyt7-29-2025 08:03 UTC
   5
3. "class of TFoo".Create

   I stumbled (by accident) on (maybe) a curiosity TFooClass = class of TFoo; can store a class (that must be TFoo or subclass of it). I would have expected that the type…

   MBJMartin Frb, Bart, J. Gareth Moreton7-6-2025 14:52 UTC
   7