Agreed that it is weird and I never use `into` in that manner, either.
On Mon, Jul 8, 2013 at 9:50 AM, Gary Trakhman <gary.trakh...@gmail.com>wrote:
> Into is reduce-conj, and this relies on a special-case of conj for maps
> and map entries. I find it hard to read, so I would vote for apply/reduce
> merge.
>
> This is weird and unexpected, so please don't:
> user> (into {:c :d} [{:a :b}])
> {:c :d, :a :b}
> user> (into {:c :d} {:a :b})
> {:c :d, :a :b}
>
>
>
> On Mon, Jul 8, 2013 at 12:30 PM, Max Penet <m...@qbits.cc> wrote:
>
>> You don't need apply, you can just use into:
>>
>> user> (into {} [{:apple "red and crunchy"} nil nil {:Numb 1} nil nil
>> {:Field "FRUIT.Description"}])
>> {:apple "red and crunchy", :Numb 1, :Field "FRUIT.Description"}
>>
>> On Monday, July 8, 2013 5:01:20 PM UTC+2, VaedaStrike wrote:
>>>
>>> So I have data structure that's equivalent to the following—
>>>
>>> ({:apple "red and crunchy"} nil nil {:Numb 1} nil nil {:Field
>>> "FRUIT.Description"})
>>>
>>> and I'm trying to combine the maps into a single map and I'm just being
>>> flummoxed
>>>
>>> I tried destructuring it and then applying a merge to the maps while not
>>> touching the 'nil's but I'm not getting that to work, here's the code I
>>> tried—
>>>
>>>
>>> (def sequ ({:apple "red and crunchy"} nil nil {:Numb 1} nil nil {:Field
>>> "FRUIT.Description"}))
>>> ::The above is just representing the structure I get from a previous
>>> parse function.
>>> ;; If there's a way to alter this so it works with what I'm trying to do
>>> please
>>> ;; let me know, or if I'm just doing it all wrong let me know as well!!
>>>
>>>
>>> (defn extract-n-merge-map [sequ]
>>> (let [(a _ _ b _ _ c) sequ]
>>> (merge a b c)))
>>>
>>> ;; This is giving me "unsupported binding form: (a _ _ b _ _ c) at line
>>> ..."
>>>
>>> Basically I'm using instaparse to take a block of code in another
>>> language and trying to automate it's transformation to a new format.
>>>
>>> I thought that parsing out and taging it's components in a map would
>>> give me an overall process that would make other such
>>> automatons in the future much easier, but since this is my first attempt
>>> at using clojure to do something productive I'm just
>>> riddled with noobness and it's just getting so frustrating to have
>>> gotten this far and not being able to figure out how to get over the
>>> last hump.
>>>
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