Thun/docs/reference/bool.md

# bool Basis Function Combinator bool(x) -> bool Returns True when the argument x is true, False otherwise. The builtins True and False are the only two instances of the class bool. The class bool is a subclass of the class int, and cannot be subclassed. Gentzen diagram. ## Definition if not basis. ## Derivation if not basis. ## Source if basis ## Discussion Lorem ipsum. ## Crosslinks