On Mon, Feb 14, 2011 at 5:48 AM, Timo Mihaljov <noid....@gmail.com> wrote:
> On Tue, Feb 08, 2011 at 09:01:38AM -0500, Stuart Halloway wrote:
>> Please let us know when you get a misleading error message from a
>> macroexpansion, so we can make it better. Or contribute a patch along the
>> lines
>> of [2].
>
> Here's a misleading lack of an error message:
>
> (defn foo [x]
> {:pre (odd? x)}
> x)
>
> The code may look fine at a glance, but the precondition is not
> wrapped in a seq, so the actual preconditions become checks for
> truthiness of `odd?` and `x`.
>
> Maybe precondition forms should be required to be vectors, so that
> function call forms can't be mistaken for lists of preconditions?
+1
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