:-) Sorry, it has me stumped too.
Hopefully someone can clarify.
Ambrose
On Wed, Jul 18, 2012 at 8:28 PM, john <john.vie...@gmail.com> wrote:
> Hi Ambrose,
> I liked your core.logic video very much!
> But no the code doeen't seem to work:
>
> (defmacro aTest []
> `(~'defn ~'aFun [^{:tag ~'long} ~'b ] (meta ~'b) ))
>
> and I also tried:
>
> (defmacro aTest []
> (list 'defn 'aFun (vector (with-meta 'b {:tag long})) '(meta b)))
> before
>
> (aFun 8) yields nil
>
> So I think the type hint are not on the param
>
> Am Mittwoch, 18. Juli 2012 14:18:21 UTC+2 schrieb Ambrose
> Bonnaire-Sergeant:
>
>> Hi John,
>>
>> The type hint ^long expands to ^{:tag long}.
>>
>> So something like this should do the trick (untested).
>>
>> (defmacro aTest []
>> `(~'defn ~'aFun [^{:tag '~'long ~'b ] (meta ~'b) ))
>>
>> Thanks,
>> Ambrose
>>
>>
>> Hello,
>>> how do I get primitive typ hints to appear in the output of a macro?
>>>
>>> like :
>>> (defmacro aTest []
>>> `(~'defn ~'aFun [^long ~'b ] (meta ~'b) ))
>>>
>>> (macroexpand-1 '(aTest))
>>> yields :
>>>
>>> (aFun 7)
>>> (macroexpand-1 '(aTest))
>>> yields :
>>>
>>> (defn aFun [b] (clojure.core/meta b))
>>>
>>> but I wold like it to be :
>>> (defn aFun [^long b] (clojure.core/meta b))
>>>
>>> Many greetings
>>> John
>>>
>>>
>>>
>>
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