And also:
(mapcat identity {:in [1 2 3]}) => '(:in [1 2 3])
But yeah, destructuring with *&* then using *apply* is pretty clear too.
- Matt
On Monday, September 9, 2013 10:41:12 PM UTC-4, Leif wrote:
>
> Careful - `flatten` recursively flattens sequential things. E.g.
> (flatten (seq {:in [1 2 3]})) => '(:in 1 2 3), which is probably not what
> you want.
>
> You really want `flatten1`, which doesn't exist in core. A version that
> works on maps is
> (apply concat {:in [1 2 3]}) => '(:in [1 2 3]). This appears within
> Alex's solution.
>
> I would personally go with Meikel's solution, though. It seems the nicest.
>
> --Leif
>
> On Monday, September 9, 2013 7:02:43 PM UTC-4, Mark Mandel wrote:
>>
>> The solution I've actually gone with is:
>>
>> (apply esd/search es-index mapping-type (-> options seq flatten))
>>
>> Seems the most consise and shows the intent of what I'm trying to do
>> quite well - better than a (relatively) confusing `reduce` statement.
>>
>> Again, the help is appreciated.
>>
>> Mark
>>
>>
>> On Tue, Sep 10, 2013 at 8:57 AM, Mark Mandel <mark....@gmail.com> wrote:
>>
>>> Thanks for the help all, that gave me some things to think about.
>>>
>>> Cheers,
>>>
>>> Mark
>>>
>>>
>>> On Mon, Sep 9, 2013 at 9:22 PM, Meikel Brandmeyer (kotarak) <
>>> m...@kotka.de> wrote:
>>>
>>>> Hi,
>>>>
>>>> Am Montag, 9. September 2013 12:31:30 UTC+2 schrieb Alex Fowler:
>>>>
>>>>> I would also add that in case, if you *need* to destructure the
>>>>> `options` map for some reason, like:
>>>>>
>>>>> `(defn search
>>>>> "Docstring"
>>>>> [mapping-type & {:keys [option-1 option-2] :as options}]
>>>>> (do-smth-with-option-1 ...)
>>>>> (apply esd/search es-index mapping-type options))`
>>>>>
>>>>> then you can use `mapply` to apply maps to functions that accept
>>>>> optional args maps. The code of mapply is the fllowing:
>>>>>
>>>>> `(defn mapply [f & args] (apply f (apply concat (butlast args) (last
>>>>> args))))`
>>>>>
>>>>> Combining it with partial, as adviced, could give you the
>>>>> functionality you may sometimes need:
>>>>>
>>>>> `(mapply (partial es/search es-index) your-options-map)`
>>>>>
>>>>>
>>>> You don't have to destructure in the argument list:
>>>>
>>>> (defn search
>>>> [mapping-type & options]
>>>> (let [{:keys [option-1]} options
>>>> index (index-based-on option-1)]
>>>> (apply esd/search index mapping-type options)))
>>>>
>>>> Kind regards
>>>> Meikel
>>>>
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>>>
>>>
>>>
>>> --
>>> E: mark....@gmail.com
>>> T: http://www.twitter.com/neurotic
>>> W: www.compoundtheory.com
>>>
>>> 2 Devs from Down Under Podcast
>>> http://www.2ddu.com/
>>>
>>
>>
>>
>> --
>> E: mark....@gmail.com
>> T: http://www.twitter.com/neurotic
>> W: www.compoundtheory.com
>>
>> 2 Devs from Down Under Podcast
>> http://www.2ddu.com/
>>
>
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