What evaluates to false in Ruby?

Question

false and nil evaluate to false in Ruby. Anything else? Please provide links to official/authoritative references.

Answer 1

I can only agree, that nil and false are indeed the only two values, that evaluate to false in Ruby. I just wanted to point to another useful resource:

True and False vs. "Truthy" and "Falsey" (or "Falsy") in Ruby, Python, and JavaScript