For checking if it's a managed type you should use the IsManagedType intrinsic. You could also use it to implement the System.Move() for non-managed types. The compiler only generates the appropriate code:
If IsManagedType(T) then // for loop else // move Best Regards Nico Bart via fpc-pascal <fpc-pascal@lists.freepascal.org> schrieb am Sa., 9. Jan. 2021, 22:55: > On Sat, Jan 9, 2021 at 8:14 PM Yuriy Sydorov via fpc-pascal > <fpc-pascal@lists.freepascal.org> wrote: > > > > So, I'll use a for loop to copy the data. > > > > > > I assume that doing Arr[Index] := Default(T) will also finalize the > > > element if that element ismanaged? > > > > For class object instances call Arr[Index].Free, for other managed types > or records containing managed types > > Finalize(Arr[Index]) should work. > > In the base class, is there a way to check wether Arr[Index] is an > object instance or a managed type or a datatype containing a managed > type? > Now the for loop (I abandoned the use of Move) does something like this: > Arr[NewIndex] := Arr[OldIndex]; //do I have to finalize/free > Arr[NewIndex] also in this case? > Arr[OldIndex] := Default(T); //I understand this is not enough in those > cases > > I could of course add an (empty) method FinalizeOrFreeElement(Elem: > T); to the base class and call that inside the loop, but that feels a > bit sloppy. > > -- > Bart > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal >
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