May 17, 2010 · Is there a way to do an if in prolog, e.g. if a variable is 0, then to do some actions (write text to the terminal). An else isn't even needed, but I can't find any documentation of if.

May 25, 2015 · The = "operator" in Prolog is actually a predicate (with infix notation) =/2 that succeeds when the two terms are unified. Thus X = 2 or 2 = X amount to the same thing, a goal to unify X with …

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. Can someone explain what this operator …

Nov 22, 2012 · Prolog "or" operator, query Asked 13 years, 5 months ago Modified 12 years, 11 months ago Viewed 158k times

Nov 10, 2009 · What does \+ mean in Prolog? Ask Question Asked 16 years, 5 months ago Modified 8 years ago

How can we get something from user in prolog : for example : animal (dog). animal (cat). write ('please type animal name:'),nl. /* How to read from user and store it to X and then check that user has

In Prolog, the "not" is an example of "negation as failure", but it is felt that \+ will make it clearer to the programmer just what precisely is being asserted in any given rule. So you CAN use "not" (most PL …

Dec 4, 2015 · I'm new to Prolog and currently implementing DFS (depth-first search) and BFS (breadth-first search) algorithms. My DFS works fine as the code below, but the BFS is terminated and …

May 4, 2013 · Correct, this is a warning to enforce best practices, which is to put all related clauses together in the source file. Other than that, the proximity of clauses to each other in the source file …

Oct 12, 2015 · I'd appreciate it if someone could elaborate on the difference between the is keyword and the = operator in prolog. I saw this discussion in == and =, but it excludes is. The documentation …