Hello, I am working through examples in paragraph 3 of Learn prolog now! I always get that error/message. I googled it and I cannot get what I am supposed to reply: call('$bags':'$destroy_findall_bag') ? I just restart the program but this is not optimal :). What does it signify?

You are still in trace mode. Simply hit ‘n’ (nodebug). The interaction using ?- trace. [trace] ?- mygoal. is the standard way of doing this in Prolog, but it leads to these misconceptions. Totally suspending trace when loading a file is possible, but would make it impossible to debug user code…

Does that call occurs during a trace of a query?

[image] DaJa: What does it signify Most likely trapping the debugger after an error. What is interesting is at least the message before and the program also helps a lot in giving a meaningful answer.

It occurs when I try to leave a program.

[trace] ?- ['/Users/ai/Desktop/Logik/matrioshki.pl']. ^ Call: (23) call('$bags':'$destroy_findall_bag') ? This is the last message when I try to recompile the code.

Destroy findall bags

Help!

EricGT Split this topic September 18, 2019, 10:34pm 7

2 posts were split to a new topic: What does myGoal mean?

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Destroy findall bags

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