Delphi 2009のTStringBuilderクラス[3]:Replace

unit Unit1;



interface



uses

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

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    Button4: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

    procedure Button4Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



//TStringBuilder.Replace  

procedure TForm1.Button1Click(Sender: TObject);

var

  sb: TStringBuilder;

begin

  sb := TStringBuilder.Create;

  sb.Append('  Delphi 2007   Delphi 2009');



  sb.Replace('Delphi', 'CBuilder');

  ShowMessage(sb.ToString);         {  CBuilder 2007   CBuilder 2009}



  sb.Free;

end;



//TStringBuilder.Replace  

procedure TForm1.Button2Click(Sender: TObject);

var

  sb: TStringBuilder;

begin

  sb := TStringBuilder.Create;

  sb.Append('  Delphi 2007   Delphi 2009');



  sb.Replace('0', '9');

  ShowMessage(sb.ToString);         {  Delphi 2997   Delphi 2999}



  sb.Free;

end;



//TStringBuilder.Replace  

procedure TForm1.Button3Click(Sender: TObject);

var

  sb: TStringBuilder;

begin

  sb := TStringBuilder.Create;

  sb.Append('ABABABABABAB');



  sb.Replace('A', '-', 4, 5);

  ShowMessage(sb.ToString);    {ABAB-B-B-BAB}



  sb.Free;

end;



//TStringBuilder.Replace  

procedure TForm1.Button4Click(Sender: TObject);

var

  sb: TStringBuilder;

begin

  sb := TStringBuilder.Create;

  sb.Append('ABC123ABC123ABC123');



  sb.Replace('ABC', '-', 3, 12);

  ShowMessage(sb.ToString);      {ABC123-123-123}



  sb.Free;

end;



end.