Prolog in ai notes. It's a ternary "if-then-else" operator with an optional alternative. if a variable is 0, then to do some actions (write text to the terminal). Because of the way it's implemented in Prolog syntax, The SWI-Prolog build process put bin and lib under ~/bin and ~/lib Note: the -f flag disables loading the initialization ~/. plrc, and this could be necessary to get more 'strict control' over execution I'm currently unsure if the documentation page is up-to-date with current SW status. Is part of Prolog syntax? What's it for? Do you use it? Nov 10, 2009 · What does \+ mean in Prolog? Asked 16 years, 4 months ago Modified 7 years, 10 months ago Viewed 62k times Jan 25, 2021 · There are some special operators in Prolog, one of them is is, however, recently I came across the =:= operator and have no idea how it works. Thus X = 2 or 2 = X amount to the same thing, a goal to unify X with 2. Jan 11, 2014 · 8 The arrow in Prolog does not correspond to material implication in first-order logic. Added: Is that dash in front of your prolog part of the document? Nov 22, 2012 · Prolog "or" operator, query Ask Question Asked 13 years, 3 months ago Modified 12 years, 9 months ago Jun 2, 2018 · I've read about it in a book but it wasn't explained at all. So you CAN use "not" (most PL implementations keep it for backwards-compatibility) but to be an idiomatic modern PL programmer, you probably should prefer to use \+. I also never saw it in a program.