lazarus/components/codetools/examples/tgeneric2.pp
2005-12-26 00:00:49 +00:00

30 lines
434 B
ObjectPascal

program TGeneric2;
{$mode objfpc}
type
TList = generic(T) class(TObject)
data : T;
procedure Add(item: T);
end;
procedure TList.Add(item: T);
var
i : integer;
begin
{ The next line should fail for TList(string) }
i:=item;
data:=item;
end;
type
TMyStringList = specialize TList(string);
var
slist : TMyStringList;
begin
slist := TMyStringList.Create;
slist.Add('Test');
writeln(slist.data);
end.