I'd often just write it like this:
(defn create-map []
> (merge {:foo "a"
> :bar "b"
> ... many more keys}
> (when (some-condition-true)
> {:extra-key value)))
Alex
On Thu, Feb 21, 2013 at 7:27 AM, Ryan <arekand...@gmail.com> wrote:
> Thanks Meikel for your reply.
>
> It wasn't clear on my example, but I wish to use *merge *inside my
> create-map function. Do you think I should bind my hash-map to a let
> variable first and then apply merge, or do you have another proposal? What
> i mean is this:
>
> (defn create-key-value [value]
>
> (when (some-condition-true) {:extra-key value))
>
>
> (defn create-map []
>> (let [my-map {:foo "a" :bar "b"}]
>> (merge my-map (create-key-value "some-value")))
>
>
> Is the above "clojurish" or is there a better way? For example if the
> my-map was a big hash-map, and not with just two pairs, wouldn't it be ugly
> with the above way? or..it's just fine and no better way is possible?
>
> Ryan
>
> On Thursday, February 21, 2013 5:02:21 PM UTC+2, Meikel Brandmeyer
> (kotarak) wrote:
>>
>> Hi,
>>
>> merge works with nil. So (merge (create-map) (create-key-value
>> "some-value")) should work as you intend with the functions as they are
>> defined now.
>>
>> Kind regards
>> Meikel
>>
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