On Tue, 28 Dec 2021 23:11:42 +0100 (CET) Michael Van Canneyt via fpc-pascal <fpc-pascal@lists.freepascal.org> wrote:
>[...] > > Slightly off topic, and my Object Pascal is getting a bit rusty as > > the years go by. <grin> ;-) In your factory above, is the "as > > IInterface" part needed. No. > Can't the FPC compiler automatically cast > > the return type based on the function return type, and the fact > > that the compiler should know that TIntf2Impl type implements > > TInterfacedObject? Yes. > No, theoretically it probably could, but type inference is not > implemented in Pascal. This is not type inference. It compiles with fpc and pas2js: Function GetMyOtherInterface(Const aName : string) : IInterface; begin Result:=TIntf2Impl.Create; end; Mattias _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
