On Fri, Jul 25, 2014 at 3:09 PM, boz <b...@cox.net> wrote:

> I'm no Clojure guru, but why not just use set?
> http://grimoire.arrdem.com/1.6.0/clojure.core/set/
>
> But you want to get rid of the timestamp. Using map is probably right for
> that. So I think this is more idiomatic...
>
> (defn only-keep-unique-ids [ids]
>   (set (map #(get-form-id-without-timestamp %) ids)))
>
>
That won't necessarily get the *first* one; also, it will return a set of
the prefixes, not a set of the ids that have the relevant prefixes.

-- 
Ben Wolfson
"Human kind has used its intelligence to vary the flavour of drinks, which
may be sweet, aromatic, fermented or spirit-based. ... Family and social
life also offer numerous other occasions to consume drinks for pleasure."
[Larousse, "Drink" entry]

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