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type
TObjectHelper = class helper for TObject
public
class function &&op_LogicalOr<T: class>(A, B: T): T; static;
end;
class function TObjectHelper.&&op_LogicalOr<T>(A, B: T): T;
begin
if A <> nil then
Result := A
else
Result := B;
end;
procedure Test;
var
sl1, sl2, sl3: TStringList;
begin
sl1 := nil;
sl2 := TStringList.Create;
sl3 := sl1 or sl2; // -> sl3 = sl2
end;
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