Predicate
Predicates are callable units that return a boolean as a result. If a predicate has one argument, it’s called a unary predicate. If a predicate has two arguments, it’s called a binary predicate.
Predicates are callable units that return a boolean as a result. If a predicate has one argument, it’s called a unary predicate. If a predicate has two arguments, it’s called a binary predicate.