Yes, only the first map passed into baz (only one passed in anyway in the
example) is kept, anything else is thrown away. Seems like a strange
example when something like this would have sufficed to get the point of
merge across:
(defn baz [options]
(let [options (merge {:opt1 "default-1" :opt2 "default-2"}
options)]
options))
(baz {:opt1 "custom-1" :opt3 "custom-3"});;=> {:opt3 "custom-3" :opt1
"custom-1 :opt2 "default-2"}
On Thu, 12 May 2016 at 07:45 hiskennyness <kentil...@gmail.com> wrote:
> I do not understand something this example:
>
>
> https://clojuredocs.org/clojure.core/merge#example-54c7b859e4b0e2ac61831cdf
>
> Specifically:
>
> (defn baz [& options]
>> (let [options (merge {:opt1 "default-1" :opt2 "default-2"}
>> (first options))]
>> options))
>> (baz {:opt1 "custom-1" :opt3 "custom-3"});;=> {:opt3 "custom-3" :opt1
>> "custom-1 :opt2 "default-2"}
>>
>>
> IIANM, that throws away all but the first map in the rest parameter
> options.
>
> Is there more going on here than I realize?
>
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