into doesn''t preserve metadata (clj-1.4).
> (meta (into (with-meta {} {:foo :bar}) {}))
nil
There was an Issue about it, but it was closed:
http://dev.clojure.org/jira/browse/CLJ-916
On Sunday, April 14, 2013 11:01:26 PM UTC+2, Marko Topolnik wrote:
>
> Yes, it is meant to preserve metadata, as well as all other core functions
> of such kind. Clojure is dedicated to doing the right thing with metadata
> wherever there is an obvious "right thing" to do. If you find a case where
> it doesn't preserve meta, you probably have a bug to report.
>
> -marko
>
> On Sunday, April 14, 2013 10:41:45 PM UTC+2, JvJ wrote:
>>
>> I've noticed that the conj operation seems to preserve metadata in most
>> cases:
>>
>> >(meta (conj (with-meta [] {:a 1}) 5))
>> {:a 1}
>>
>> However, I'm not sure if this is something I can depend on, or if it's
>> just a fluke.
>> Is this "part of the spec", as it were?
>>
>
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