On Friday, March 8, 2013, Loryn Jenkins wrote:
> I was playing around with predicates today.
>
> It seems that when I attempt to run a default constructor directly on a
> predicate type, I get a macro expansion error.
>
> I quickly grepped through the codebase in basis and extras, and couldn't
> find an instance where a constructor was used off a predicate class.
>
> Can I assume that predicate types are not intended to be instantiated
> directly? Or am I assuming that erroneously?
>
Indeed, a predicate type isn't a concrete type, and it doesn't really make
sense to construct one. C: is intended to be used only for concrete TUPLE:
types. It's a bug that it appears to work on non-tuples.
-Joe
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