Получить количество ссылок AnsiString

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Code:

function GetAnsistringRefcount(const S: string): Cardinal;

asm

  or eax, eax

  jz @done

  sub eax, 8

  mov eax, dword ptr [eax]

@done:

end;

 

procedure TForm1.Button1Click(Sender: TObject);

var

  S1, S2: string;

begin

  memo1.lines.Add(Format('Refcount at start: %d',

    [GetAnsistringRefcount(S1)]));

  S1 := StringOfChar('A', 10);

  memo1.lines.Add(Format('Refcount after assignment: %d',

    [GetAnsistringRefcount(S1)]));

  S2 := S1;

  memo1.lines.Add(Format('Refcount after S2:=S1: %d',

    [GetAnsistringRefcount(S1)]));

  S2 := S1 + S2;

  memo1.lines.Add(Format('Refcount after S2:=S1+S2: %d',

    [GetAnsistringRefcount(S1)]));

end;

 

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