Tap Forms Database Pro for Mac, iPhone, iPad and Apple Watch › Forums › Using Tap Forms 5 › calculations problems
- This topic has 5 replies, 2 voices, and was last updated 12 years, 5 months ago by 
Brendan.
 
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May 18, 2013 at 1:26 AM #6202
enverParticipantHi,
I can’t seem to use calculation fields for further calculations as they do not appear in the formula box. The second problem concerns calculations containing brackets: if I enter a bracket into the formula box, the first numbers field from the list of available fields is entered in the box and the bracket has disappeared.
Am I doing something wrong?
Thanks for any help,
enverMay 18, 2013 at 10:43 AM #6203
BrendanKeymasterHello Enver,
I haven’t implemented the ability to use calculation fields inside other calculation field formulas.
The main reason for this is best demonstrated by the following example:
A = B + C
C = A + DA can’t be computed until C is. But then C can’t be computed until A is computed. A classic chicken and egg situation.
Which version of the app are you using? IOS or Mac?
Thanks,
Brendan
May 18, 2013 at 12:11 PM #6204
enverParticipantHi Brendan,
thank you for your reply. I’m using the Mac version of the app.
In my case, my calculation goes as follows:
A + B = C
(D * 2) + C = E
I can do this with Bento, even with MS Word.Best regards,
enverMay 21, 2013 at 12:18 AM #6208
BrendanKeymasterHello Enver,
It’s just something that I need to take care of to prevent getting into a bad situation. What happens in those programs if you try to create a circular reference?
Thanks,
Brendan
May 23, 2013 at 10:48 AM #6213
enverParticipantHello Brendan,
as I never encountered the problem of a circular reference this item never struck me as being problematic, so I never worried about it. I have been working with aforementioned programs for years and nothing bad happened to my calculations.
Regards
enverMay 25, 2013 at 8:59 AM #6223
BrendanKeymasterHello Enver,
It’s just something that I would need to ensure doesn’t happen in the program otherwise it would create an infinite loop and cause the app to crash. So as a programmer, I have to worry about it and come up with a possible solution. I’m sure there is a good solution to this problem. I just haven’t had the time to investigate it yet.
This is a popular feature request, so it’s definitely on my radar.
Thanks,
Brendan
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