[fpc-pascal] Untyped var params

[Bart]

On 1/7/17, Dmitry Boyarintsev <skalogryz.lists at gmail.com> wrote:

>> But if you know that at forehand (and you know, since you cast it),
>> why then use an untyped var parameter at all?
>>
>
> http://www.freepascal.org/docs-html/rtl/system/fillchar.html ?

That does not realy answer my question.

It was suggested to do something like this:

procedure X(var Y);
begin
  PInteger(Y)^ := 3;  //syntax may be wrong, too lazy to test
end;

To me this completely defies the purpose of an untyped var parameter,
since in this exmaple you do know, @design time, the type of Y, so why
not write then

procedure X(var Y: Integer);
begin
  Y := 3;
end;

FillChar OTOH _is_ a good example of why you would use an untype var parameter.

Bart