alpha 1 NullableForDelphi.zip

.Implemented integerNull type act as .NET Int32? type

With "Nullable For Delphi" it's possible write following code

procedure TForm1.Button3Click(Sender: TObject);
var
  i,a,b: IntegerNull;
  x: integer;
  e: Extended;
begin
  i := 3;
  i := nil;  //ActAs Pointer to value type
  i := 3;
  i := i + 1;
  i := i - 1;
  i := i * 3;
  x := i;
  e := i / 3;
  i := trunc(i / 3);
  inc(i);
  dec(i);
  i := i div 3;
  i := nil;
  i := a div b; //a and b is still not assigned, i become "nil"
  assert(i = nil); 
  i := '3'; //now "i" is 3, automatic conversion from string (no more StrToInt)
  assert(i = 3);
  i := '10' + i + '45'; //still... kill strtoint :-)
  showmessage(i); //show 58
end;

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