your version is obviously wrong, when '~param will try to resolve param,
but no luck
On Saturday, December 24, 2016 at 10:07:15 PM UTC+8, Jim foo.bar wrote:
>
> try the following:
>
> (defmacro defapihandler [handler-name params & body]
> `(defn ~handler-name ['~passed-param]
> (let [param-keys# (vec (map (comp symbol name :key)
> ~params))
> {:keys param-keys#} '~passed-param]
> ;; some check
> ~@body)))
>
>
>
> Sorry for brevity, I'm on my phone...
> Dimitris
>
> On 24/12/16 13:23, Jiacai Liu wrote:
>
> I don’t think your answer is correct. From the expaned macro
>
> (defn create-user [passed-param__10243__auto__]
> (let [param-keys__10244__auto__ (vec
> (map
> (comp symbol name :key)
> [{:key :username,
> :checkers []}]))
> {:keys param-keys__10244__auto__} passed-param__10243__auto__]
> (do (println username))))
>
> and following test
>
> (let [some-keys '[a b]
> {:keys some-keys} {:a 1 :b 2}]
> ; thows Don't know how to create ISeq from: clojure.lang.Symbol
> (println a b))
>
> (let [{:keys [a b]} {:a 1 :b 2}]
> ; ok
> (println a b))
>
> I think it is in let destructuring form, we can’t use dynamic var to
> represent symbols
>
>
>
> On Saturday, December 24, 2016 at 8:43:42 PM UTC+8, Jim foo.bar wrote:
>>
>> you need to use `'~passed-param` in your arg-vector, and the same
>> whenever you use it inside the newly defined fn.
>>
>>
>> HTH,
>>
>> Dimitris
>>
>> On 24/12/16 11:48, Jiacai Liu wrote:
>>
>> how to make correct fn args when create fn using macro
>> http://stackoverflow.com/q/41312963/2163429?sem=2
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