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8.2.10.5 Variant Records

GPC supports variant records like in EP and BP. The following construction is not allowed in Extended Pascal, but in BP and GPC:

 
program BPVariantRecordDemo;

type PersonRec = record Age: Integer; case EyeColor: (Red, Green, Blue, Brown) of Red, Green : (WearsGlasses: Boolean); Blue, Brown: (LengthOfLashes: Integer); end;

begin end.

In EP, the variant field needs a type identifier, which, of course, also works in GPC:

 
program EPVariantRecordDemo;

type EyeColorType = (Red, Green, Blue, Brown);

PersonRec = record Age: Integer; case EyeColor: EyeColorType of Red, Green : (WearsGlasses: Boolean); Blue, Brown: (LengthOfLashes: Integer); end;

begin end.



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