In what other languages does 0 evaluate to true?

nanny · on Dec 13, 2022

Lua, Elixir, Common Lisp, Scheme, Racket, Clojure.

Most statically-typed languages don't let you evaluate 0 as a boolean.

IMO, 0 is a value, and values should be truthy. 0 being falsy is only a wart from C.

fl_ciq · on Dec 13, 2022

Thanks for that, I had no idea. Do you know if zero is truthy in erlang? It makes sense for elixir (based on ruby) but I'm wondering if erlang is that way too.

nanny · on Dec 14, 2022

>Do you know if zero is truthy in erlang?

I don't know off the top of my head, but I would assume that yes, zero is truthy in Erlang as well, since Elixir is fully compatible with it.