handling only a part of a hash-map

[Christian]

Hi,

I'm just beginning with clojure.

;(let [conn (mg/connect)
; db   (mg/get-db conn throughput)
; coll clojure_throughput_src]
;;; with a query, as Clojure maps
;  ( doseq [item (mc/find-maps db coll {})]
;(println
;  (get_timeslot
;(get_dt
;  ( get item :ts))

In a mongodb collection I have a timestamp and an id. I'll transform the 
timestamp which works fine.
But I'm struggle with getting  the id  , too   - let  it untransformed and 
going on with this hash-map result.

Thanks in advance
Christian




-- 
You received this message because you are subscribed to the Google
Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
Clojure group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: handling only a part of a hash-map

[Mike Fikes]

select-keys makes it easy to extract a portion of a map:

(select-keys {:id 1 :ts 2 :ignore 3} [:id :ts])
= {:ts 2, :id 1}

-- 
You received this message because you are subscribed to the Google
Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
Clojure group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.