- prolog_bool_to_json(+Prolog, -JSON) is semidet
- JSON is the JSON boolean for Prolog. It is a flexible the Prolog
notation for thruth-value, accepting one of
true, on or 1
for @true and one of false, fail, off or 0 for @false.
- Errors
- - instantiation_error if Prolog is unbound.