Core Prolog interpreter.

stack init
stack build

stack exec purelog-exe <code.pl>

During idle:

• quit to exit
• strategy(BFS). to switch to BFS (default is DFS)
• strategy(DFS). to switch to DFS

During search:

• ; to find the next solution
• . to terminate searching
• # to print the number of solutions found
• $ to find the remaining solutions

stack exec purelog-exe sample.pl

• equal(f(g(a,X),X), f(Y, b)).
• ancestor(X, Y).
• append([a, b], [c, d], R).
• append([A, b], [c, D], [a, B, C, d]).
• reverse([a, b, c, d], R).