*> In Ruby, only nil and false are false, so you can use || to catch 0s and ...

> In Ruby, only nil and false are false, so you can use || to catch 0s and empty strings.

But there's still trouble with things like boolean configuration variables ...

> In Perl [...] there's the // operator

Thanks for mentioning that! [1] The // operator is indeed a clean operator, almost equivalent to COALESCE.

So we have Perl and SQL. Any other language with such an operator?