On Thu, Jan 29, 2009 at 1:06 PM, Paul Mooser <taron...@gmail.com> wrote:

>
> I know this has been discussed on the list before to some extent, but
> does clojure by default have any operations which actually do what
> "contains?" sounds like it would do, for all collections? I know that
> you can easily write something similar using "some", but often times
> you just want to find if something is in a list of items.
>
> I've seen Rich say that contains? is for associative things, but I
> think it is an unfortunate name - if the idea is to express that the
> collection has a value for that key, I think the name would ideally
> express that, like:
>
> contains-key?
> has-key?
> maps?
>

I would prefer has-key? for checking if a key is in a map and contains? for
checking if an element is in a collection.

-- 
Cosmin Stejerean
http://offbytwo.com

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