子界的问题
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
btn1: TButton;
procedure btn1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
type
MySet = set of 0..254 ;
procedure TForm1.btn1Click(Sender: TObject);
var
myS : MySet;
begin
if 2 in myS then
ShowMessage('ok')
else
ShowMessage('error');
end;
end.
procedure TForm1.btn1Click(Sender: TObject);
var
myS : MySet;
begin
myS := [0, 1, 2, 3];
if 2 in myS then
ShowMessage('ok')
else
ShowMessage('error');
end;
