[Gambas-user] R: Unending cycle "For...Next" with variable As Byte

[Kevin Fishburne]

This one bit me a while back and the answer was the same and I confirmed 
it through testing. Maybe the documentation for For...Next should 
mention it. I suspect many BASIC dialects don't work this way, which 
could lead to confusion for new users of GAMBAS. I could be wrong, but I 
think even GAMBAS used to not work this way, which makes the issue even 
more confusing. Then again, the root of the issue doesn't really have 
anything to do with For...Next but in how variables deal with 
assignments that are out of range.

On 09/30/2012 11:40 AM, Jussi Lahtinen wrote:
> It is not bug, Richard is right.
>
> Jussi
>
>
>
> On Sun, Sep 30, 2012 at 6:32 PM, Tobias Boege <taboege at ...626...> wrote:
>
>> On Sun, 30 Sep 2012, Ru Vuott wrote:
>>> ...I have:
>>>
>>> [Gambas 3]
>>> Version=3.3.0
>>>
>>>
>>>
>>>
>>>
>>> --- Dom 30/9/12, Ru Vuott <vuott at ...325...> ha scritto:
>>>
>>>> Da: Ru Vuott <vuott at ...325...>
>>>> Oggetto: [Gambas-user] Unending cycle "For...Next" with variable As
>> Byte
>>>> A: gambas-user at lists.sourceforge.net
>>>> Data: Domenica 30 settembre 2012, 16:57
>>>> Hello,
>>>>
>>>> maybe I'm in the clouds.... but I don't understand why this
>>>> cycle:
>>>>
>>>> **********
>>>> Public Sub Button1_Click()
>>>>
>>>> ? Dim j As Byte
>>>>
>>>> ? For j = 0 To 255
>>>>
>>>> ???Print j
>>>>
>>>> ? Next
>>>>
>>>> End
>>>> **********
>>>>
>>>> runs "ad infinitum" !
>>>>
>>>> Regards
>>>> vuott
>>>>
>> Can confirm that with rev5189. Richard's guess sounds logical. "For To" is
>> inclusive: [0; 255] and that's everything you can represent with Byte
>> width.
>> You won't ever detect Byte > 255.
>>
>>

-- 
Kevin Fishburne
Eight Virtues
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