Position marker color change during debugging - discuss.visual-prolog.com

Peter Muraya · Post by **Peter Muraya** » 10 Sep 2015 18:21

Hi,
When debugging code, sometimes, the position marker changes from blue to pink. What is this telling me?

Post by **Thomas Linder Puls** » 10 Sep 2015 18:38

It turns pink when the construction fails.

Peter Muraya · Post by **Peter Muraya** » 11 Sep 2015 5:18

Hi Thomas,
I guess my confusion came about because the pointer seemed to remain at the same position as the color changed. I can now see it is because of the iterative nature of my get_labels predicate. In this case, what construct failed -- the line

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ChildXp in caller:children

or clause

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get_labels()=Label:-

?