On Sep 1, 7:35 pm, Conrad <[email protected]> wrote:
> Hi everyone! I was wondering if there was a better idiom in Clojure
> for filtering items from a map... Suppose we want to remove all items
> from a map that have an odd number as a value. Here's how I'd write
> it:
I like to use "reduce" for processing maps:
(reduce
(fn [result [key value]]
(if (even? value)
(assoc result key value)
result))
{}
{:dog 5 :cat 4 :mouse 7 :cow 6})
This is slightly more efficient than (into {} ...), although
transients may soon change that.
-SS
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