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Mybe a bug ?

Started by YOUSSEF HOUIET, September 09, 2022, 12:46:41 PM

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when deleting a subject, the constraints linked to it, do not delete, and cause an error. 
Constraints like:
Activites begin/end student day's
Activites has prefered begin time

Liviu Lalescu


Thank you for the bug report! It is only for activities begin students/teachers day. I corrected and I will release the new version today or tomorrow, I hope.


Hi liviu

The bug also appears when we use
activities begin students/teachers day constraint.

Liviu Lalescu

Hi, Youssef,

I don't understand, it is exactly what I said.

But anyway, could you please check that the bug is solved in the snapshot FET-6.6.0-snap? Please let me know as soon as possible, since I hope to release on Monday (tomorrow) afternoon.


I meant activities to end student and teacher day, I mistyped the post

Liviu Lalescu

I just checked, everything OK. I added constraints activities end students' day and activities end teachers' day and removed the two subjects - the 2 constraints were removed.

Could you please send me the FET-6.6.0-snapshot .fet data file with an indication on how to replicate the bug?

Liviu Lalescu

I received the screenshot on Facebook. My answer:

It's OK. You just don't have any activity with this subject. This is a feature, not a bug. The bug was with "begin students/teachers day".

If you remove this subject, the constraint will be removed.


Ok, i understand,

for the test, I tested 3 files on 2 computers, on version 6.5.7 and on the new version, with the same random seeds, the schedules are identical, the solving times are the same, the random seeds after are the same.

i also test the new constraint (min hours in the afternoon),it works and give a good results

Liviu Lalescu

Thank you very much for the testing and for the good news!