Handbook之015：动态数组相加

动态数组支持直接相加，方法如下：

代码如下：

unit Unit1;

interface

uses
  Winapi.Windows,
  Winapi.Messages,
  System.SysUtils,
  System.Variants,
  System.Classes,
  Vcl.Graphics,
  Vcl.Controls,
  Vcl.Forms,
  Vcl.Dialogs,
  Vcl.StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
uses
  System.Diagnostics,
  System.Math;

type
  TDays = array of Integer;
//函数定义

procedure ShowStaticArrays();
var
  m_Day: TDays;
  I: Integer;
begin
  SetLength(m_Day, 3);
  for I := Low(m_Day) to High(m_Day) do
  begin
    m_Day[I] := I;
  end;

  m_Day :=  m_Day + m_Day;     // 会修改原数组结果
  m_Day := m_Day + [520,3344];
  for I := Low(m_Day) to High(m_Day) do
  begin
    Form1.Memo1.Lines.Add('m_Day[' + I.ToString + '] := ' + m_Day[I].ToString);
  end;
end;

//计时
procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowStaticArrays();
end;

end.