Why `case`? You can make the same with a plain record:
type
generic TOption<T> = record
IsSome: boolean;
some: T;
end;
вт, 1 июн. 2021 г. в 21:26, denisgolovan via fpc-pascal <
fpc-pascal@lists.freepascal.org>:
> Hi all
>
> I am trying to implement Option<T> type in FPC.
>
> type
> generic TOption<T> = record
> case IsSome:boolean of
> true: ( some: T );
> false: ();
> end;
>
> However fpc just emits errors:
> Error: Type parameters may require initialization/finalization - cannot be
> used in variant records
>
> Could anybody suggest some sane workaround for the problem?
>
> -- Regards,
> Denis Golovan
> _______________________________________________
> fpc-pascal maillist - fpc-pascal@lists.freepascal.org
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>
--
Victor Matuzenko (Виктор Матузенко)
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