[fpc-devel] Array assignment operator

[Sven Barth]

Am So., 4. Nov. 2018, 20:36 hat Gennady Agranov <gennadyagranov at gmail.com>
geschrieben:

> On 11/4/2018 11:24 AM, Sven Barth via fpc-devel wrote:
>
> Am So., 4. Nov. 2018, 12:23 hat Schindler Karl-Michael <
> karl-michael.schindler at web.de> geschrieben:
>
>>
>>
>> > Am 04.11.2018 um 12:00 schrieb Ben Grasset <operator97 at gmail.com>:
>> >
>> > From: Ben Grasset <operator97 at gmail.com>
>> > To: FPC-Devel users discussions <fpc-devel at lists.freepascal.org>
>> > Subject: Re: Array assignment operator
>> > Message-ID: <
>> CAL4d7FjPfX-ysT6Z3--fhPR9Pts-N47ksFN6m2pHD7SunzwpJg at mail.gmail.com>
>> > Content-Type: text/plain; charset="utf-8"
>> >
>> > On Sat, Nov 3, 2018 at 4:44 PM Gennady Agranov <
>> gennadyagranov at gmail.com>
>> > wrote:
>> >
>> >> Hi,
>> >>
>> >> Leaving aside the reason why the MiSchi's solution doesn't work the
>> main
>> >> question is still not answered :)
>> >>
>> >> If you have integer dynamic array "MyArray" is there a way for the
>> >> following statement to compile and work correctly:
>> >>
>> >> MyArray := 5;
>> >>
>> >
>> > Uh, yes? That's what my example showed.
>>
>> In your example the length of the array was set to the number and the
>> elements of the array assigned to their index, whereas my intention is to
>> keep the length of the array and fill all elements to the same number.
>>
>
> The operator always creates a new array and does not modify the existing
> one.
> You'd need to abuse a binary operator (e.g. >< or even <=) for this.
>
> Regards,
> Sven
>
>>
>
> _______________________________________________
> fpc-devel maillist  -  fpc-devel at lists.freepascal.orghttp://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
>
> I was thinking that type helper might work - e.g. MyArray.SetValue(5) and
> with using properties MyArray.Value := 5
>
> But seems that even simple type helper is not working anymore?
>
> E.g. I was not able to compile example from
> http://wiki.freepascal.org/Helper_types :(
>
> TTypeHelper = type helper for Integer
>   procedure SetZero;end;
>
> Did you add {$modeswitch typehelpers}?

If so, what is the error you get?

Regards,
Sven

>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freepascal.org/pipermail/fpc-devel/attachments/20181104/4d2b2c66/attachment.html>