Hello all, I want to find a way to write a streaming mechanic for Generic data structures. For simplicity let's assume that I want to write a class or function to stream TFPGList (I do not use them, but my set of generic classes is written in a similar manner). However, due to FPC's restricted generics support I cannot find a way to reasonably do that.
Ideally, I'd only like to write the streaming mechanism for each set of types (normal, anisstring, dynamic array, objects, interfaced objects) once, and use it for every set of items. However, there's no reasonable way to detect the type and do an execution for it. Ideally I'd be able to write a generic procedure : procedure StreamType( Stream : TStream; Data : T ); ... but we don't have generic procedures yet. Still, even if using classes, the inability to do specializations makes it impossible to write a generic streaming system. Is there a way to detect a type easily of "any passed value"? It would be enough for me to have a function procedure StreamType( Stream : TStream; var Data ); ... that could detect the type of data, as long as it would accept simple types, ansistrings, classes and dynamic arrays. -- regards, Kornel Kisielewicz http://chaosforge.org/ _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
