Ruby - A strange boolean operator

Question

Given this code:

int = 0
str = ""
if int && str then puts 1 else puts 0
end

why does it output 1, that is, why the "and" is true?

Answer 1

Both 0 and "" are truthy in Ruby.

https://gist.github.com/jfarmer/2647362

https://stackoverflow.com/questions/15989329/what-is-good-if-an-empty-string-is-truthy

Answer 2

Hi to everyone