I've always relied on this being true without losing sleep at night (or
during the day), and it has a good grounding in predicate logic:

  http://en.wikipedia.org/wiki/Universal_quantification#The_empty_set

Cheers,

Mark


Sean Devlin <francoisdev...@gmail.com> writes:

> The following return true:
>
> user=>(every? even? nil)
> true
>
> user=>(every? even? [])
> true
>
> Is this behavior the specified behavior?  Can I ASSUME it is true in
> my code?

-- 
Mark Triggs
<mark.h.tri...@gmail.com>

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