I got confused a bit with the reason that a macro would not be appropriate
for this case. Can you please explain again?
Ryan
On Thursday, February 21, 2013 7:05:11 PM UTC+2, Alex Baranosky wrote:
>
> A function could be appropriate, but a macro not appropriate, since
> everything you need here can be done with using macros.
> On Feb 21, 2013 7:53 AM, "Ryan" <areka...@gmail.com <javascript:>> wrote:
>
>> Thanks for your input Alex.
>>
>> Do you think a macro would be appropriate if I use this more than once in
>> my code?
>>
>> Ryan
>>
>> On Thursday, February 21, 2013 5:41:49 PM UTC+2, Alex Baranosky wrote:
>>>
>>> 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 <areka...@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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