Don't forget about the option of walking over a map by using
clojure.walk/postwalk or clojure.walk/prewalk
I use these functions often lately. Especially useful if you have to update
values in your map and they could occur anywhere. It is a bit tricky to get
working at first, because the return value of each step needs to match the
structure that is currently walked. For that reason you sometimes need to
switch between a postwalk instead of a prewalk etc.
Try this for a demo
(def m
{"outerKeyA" {:innerKeyA {"string id" {:foo 1 :bar 2}}}
"outerKeyB" {:innerKeyB {"string id" {:bar 5 :baz 10}}}})
(clojure.walk/postwalk-demo m)
On Thu, Dec 5, 2013 at 11:06 AM, Ryan <arekand...@gmail.com> wrote:
> Thanks guys for the useful answers :)
>
> Ryan
>
>
> On Wednesday, December 4, 2013 1:27:57 AM UTC+2, James Ferguson wrote:
>>
>> `update-in` could be helpful, depending on what exactly you're doing.
>>
>> (doseq [keyA keys, keyB otherkeys]
>> (update-in m [keyA keyB] some-function))
>>
>> On Tuesday, December 3, 2013 6:05:14 PM UTC-5, Ryan wrote:
>>>
>>> Hi all,
>>>
>>> I am trying to figure out a better way to loop the following map than
>>> using nested doseq. The map has the following structure:
>>>
>>> (def m
>>>> {"outerKeyA" {:innerKeyA {"string id" {:foo 1 :bar 2}}}
>>>> "outerKeyB" {:innerKeyB {"string id" {:bar 5 :baz 10}}}})
>>>
>>>
>>> So, right now i am doing the following:
>>>
>>> (doseq [[outer-keys collections] m]
>>>> (doseq [[collection-name collection] collections]
>>>> (doseq [[string-id data] collection]
>>>> ;; do stuff with all the above
>>>> )))
>>>
>>>
>>> Is there a more idiomatic/better way to do deeply nested
>>> iterations/traversal of map of maps?
>>>
>>> Thank you for any replies!
>>>
>>> Ryan
>>>
>>> --
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