When writing generic routines, sometimes a variable must be initialized whose type is not known during the declaration of the generic. This is where the Default intrinsic (section 4.5, page 251) also comes into play. Given the following generic declaration:
type generic TTest<T> = class procedure Test; end;
The following code will correctly initialize the variable myt during specialization:
procedure TTest.Test; var myt: T; begin // will have the correct Default if class is specialized myt := Default(T); end;