详测 Generics Collections TList (5): Move、Exchange

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    procedure Button1Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



uses Generics.Collections;



procedure TForm1.Button1Click(Sender: TObject);

var

  List: TList<Byte>;

  b: Byte;

  str: string;

begin

  List := TList<Byte>.Create();

  List.AddRange([11,22,33,44]);



  List.Move(1, 2);

  str := '';

  for b in List do str := str + IntToStr(b) + ' '; {11 33 22 44 }

  ShowMessage(str);



  List.Exchange(0, 3);

  str := '';

  for b in List do str := str + IntToStr(b) + ' '; {44 33 22 11 }

  ShowMessage(str);



  List.Free;

end;



end.