Add datalog example to RacketScript playground? #268
Description
#lang datalog
ancestor(A, B) :- parent(A, B).
ancestor(A, B) :-
parent(A, C), ancestor(C, B).
parent(john, douglas).
parent(bob, john).
ancestor(A, B)?
{{ message }}
#lang datalog
ancestor(A, B) :- parent(A, B).
ancestor(A, B) :-
parent(A, C), ancestor(C, B).
parent(john, douglas).
parent(bob, john).
ancestor(A, B)?